HRSA 2023 Uniform Data System (UDS) Patient Level Submission (PLS) (UDS+) FHIR IG
1.1.0 - STU1 Release 1.1 - Standard for Trial-Use International flag

This page is part of the HRSA Uniform Data System (UDS) Patient Level Submission (PLS) (UDS+ or uds-plus) FHIR IG (v1.1.0: STU1) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

Resource Profile: UDSPlusDiagnosis - Detailed Descriptions

Page standards status: Trial-use Maturity Level: 2

Definitions for the uds-plus-diagnosis resource profile.

Guidance on how to interpret the contents of this table can be found here

0. Condition
Definition

The UDS+ profile is based on the Condition resource and establishes the core elements, extensions, vocabularies and value sets for representing Diagnosis for UDS+ program.

ShortDe-Identified UDS Plus Diagnosis
2. Condition.id
Definition

De-dentified condition resource identifier.

ShortThe de-identified Condition identifier created by the health center to send data to UDS+ Data Receiver
Must Supporttrue
4. Condition.text
ShortCannot include any text in the resource as part of the de-identified data.
Control0..0
Must Supportfalse
6. Condition.contained
ShortCannot include any contained resources in the resource as part of the de-identified data.
Control0..0
Must Supportfalse
8. Condition.extension:assertedDate
Slice NameassertedDate
Control0..1
TypeExtension(Condition Asserted Date) (Extension Type: dateTime)
Must Supporttrue
Invariantsuds-plus-diag-1: All dateTime data elements should be truncated to a year only for de-identified resources. ($this.value.ofType(dateTime) implies $this.value.ofType(dateTime).toString().length() = 4)
10. Condition.clinicalStatus
Control0..1
Must Supporttrue
12. Condition.verificationStatus
Control0..1
Must Supporttrue
14. Condition.category
Control1..1
Must Supporttrue
16. Condition.code
Control1..1
BindingUnless not suitable, these codes SHALL be taken from US Core Condition Codes
(extensible to http://hl7.org/fhir/us/core/ValueSet/us-core-condition-code)

The set of codes indicating the diagnosis

Must Supporttrue
18. Condition.subject
Control1..1
TypeReference(De-Identified UDS Plus Patient)
Must Supporttrue
20. Condition.subject.display
Control0..0
Must Supportfalse
22. Condition.encounter
Control0..1
TypeReference(De-Identified UDS Plus Encounter)
Must Supporttrue
24. Condition.encounter.display
Control0..0
Must Supportfalse
26. Condition.onset[x]
Control0..1
TypeChoice of: dateTime, Period, string, Range, Age
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Must Support TypesdateTime
Invariantsuds-plus-diag-2: All dateTime data elements should be truncated to a year only for de-identified resources. ($this is DateTime implies $this.toString().length() = 4)
uds-plus-diag-3: All Period.start data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.start.exists() implies $this.start.toString().length() = 4)
uds-plus-diag-4: All Period.emd data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.end.exists() implies $this.end.toString().length() = 4)
28. Condition.abatement[x]
Control0..1
TypeChoice of: dateTime, Period, string, Range, Age
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Must Support TypesNo must-support rules about the choice of types/profiles
Invariantsuds-plus-diag-5: All dateTime data elements should be truncated to a year only for de-identified resources. ($this is DateTime implies $this.toString().length() = 4)
uds-plus-diag-6: All Period.start data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.start.exists() implies $this.start.toString().length() = 4)
uds-plus-diag-7: All Period.emd data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.end.exists() implies $this.end.toString().length() = 4)
30. Condition.recordedDate
Control0..1
Must Supporttrue
Invariantsuds-plus-diag-8: All dateTime data elements should be truncated to a year only for de-identified resources. ($this.toString().length() = 4)
32. Condition.recorder
34. Condition.recorder.display
Control0..0
Must Supportfalse
36. Condition.asserter
38. Condition.asserter.display
Control0..0
Must Supportfalse
40. Condition.note
Control0..0
Must Supportfalse

Guidance on how to interpret the contents of this table can be found here

0. Condition
Definition

The UDS+ profile is based on the Condition resource and establishes the core elements, extensions, vocabularies and value sets for representing Diagnosis for UDS+ program.


A clinical condition, problem, diagnosis, or other event, situation, issue, or clinical concept that has risen to a level of concern.

ShortDe-Identified UDS Plus DiagnosisDetailed information about conditions, problems or diagnoses
Control0..*
Is Modifierfalse
Summaryfalse
Invariantscon-3: Condition.clinicalStatus SHALL be present if verificationStatus is not entered-in-error and category is problem-list-item (clinicalStatus.exists() or verificationStatus.coding.where(system='http://terminology.hl7.org/CodeSystem/condition-ver-status' and code = 'entered-in-error').exists() or category.select($this='problem-list-item').empty())
con-4: If condition is abated, then clinicalStatus must be either inactive, resolved, or remission (abatement.empty() or clinicalStatus.coding.where(system='http://terminology.hl7.org/CodeSystem/condition-clinical' and (code='resolved' or code='remission' or code='inactive')).exists())
con-5: Condition.clinicalStatus SHALL NOT be present if verification Status is entered-in-error (verificationStatus.coding.where(system='http://terminology.hl7.org/CodeSystem/condition-ver-status' and code='entered-in-error').empty() or clinicalStatus.empty())
dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
con-3: Condition.clinicalStatus SHALL be present if verificationStatus is not entered-in-error and category is problem-list-item (clinicalStatus.exists() or verificationStatus.coding.where(system='http://terminology.hl7.org/CodeSystem/condition-ver-status' and code = 'entered-in-error').exists() or category.select($this='problem-list-item').empty())
con-4: If condition is abated, then clinicalStatus must be either inactive, resolved, or remission (abatement.empty() or clinicalStatus.coding.where(system='http://terminology.hl7.org/CodeSystem/condition-clinical' and (code='resolved' or code='remission' or code='inactive')).exists())
con-5: Condition.clinicalStatus SHALL NOT be present if verification Status is entered-in-error (verificationStatus.coding.where(system='http://terminology.hl7.org/CodeSystem/condition-ver-status' and code='entered-in-error').empty() or clinicalStatus.empty())
2. Condition.id
Definition

De-dentified condition resource identifier.


The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

ShortThe de-identified Condition identifier created by the health center to send data to UDS+ Data ReceiverLogical id of this artifact
Comments

The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

Control0..1
Typeidstring
Is Modifierfalse
Must Supporttrue
Summarytrue
4. Condition.implicitRules
Definition

A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

ShortA set of rules under which this content was created
Comments

Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

Control0..1
Typeuri
Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
6. Condition.text
Definition

A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.

ShortCannot include any text in the resource as part of the de-identified data.Text summary of the resource, for human interpretation
Comments

Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.

Control0..01
TypeNarrative
Is Modifierfalse
Must Supportfalse
Summaryfalse
Alternate Namesnarrative, html, xhtml, display
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
8. Condition.contained
Definition

These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.

ShortCannot include any contained resources in the resource as part of the de-identified data.Contained, inline Resources
Comments

This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

Control0..0*
TypeResource
Is Modifierfalse
Must Supportfalse
Summaryfalse
Alternate Namesinline resources, anonymous resources, contained resources
10. Condition.extension:assertedDate
Slice NameassertedDate
Definition

When the asserter identified the allergy, intolerance, condition, problem, or diagnosis or other event, situation, issue, or clinical concept that may have risen to a level of or remains a concern. For example, when the patient experiences chest pain, the asserted date represents when the clinician began following the chest pain - not when the patient experienced the chest pain. Asserted date supports the recognition that information is not always entered in a system immediately. Assertion and recording are different acts, so asserted date and recorded date are semantically different. However, they may be the same date and close in time. If this difference is significant for your use case, assertion date may be useful.

ShortDate the allergy, intolerance, condition, problem, or diagnosis or other event, situation, issue, or clinical concept was first asserted
Comments

The assertedDate is in the context of the recording practitioner and might not be the same as the recordedDate.

Control0..1
TypeExtension(Condition Asserted Date) (Extension Type: dateTime)
Is Modifierfalse
Must Supporttrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
uds-plus-diag-1: All dateTime data elements should be truncated to a year only for de-identified resources. ($this.value.ofType(dateTime) implies $this.value.ofType(dateTime).toString().length() = 4)
ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
12. Condition.modifierExtension
Definition

May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

ShortExtensions that cannot be ignored
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summaryfalse
Requirements

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
14. Condition.clinicalStatus
Definition

The clinical status of the condition.

Shortactive | recurrence | relapse | inactive | remission | resolved
Comments

The data type is CodeableConcept because clinicalStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity.

Control0..1
This element is affected by the following invariants: con-3, con-4, con-5
BindingThe codes SHALL be taken from ConditionClinicalStatusCodeshttp://hl7.org/fhir/ValueSet/condition-clinical|4.0.1
(required to http://hl7.org/fhir/ValueSet/condition-clinical|4.0.1)

The clinical status of the condition or diagnosis.

TypeCodeableConcept
Is Modifiertrue because This element is labeled as a modifier because the status contains codes that mark the condition as no longer active.
Must Supporttrue
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
16. Condition.verificationStatus
Definition

The verification status to support the clinical status of the condition.

Shortunconfirmed | provisional | differential | confirmed | refuted | entered-in-error
Comments

verificationStatus is not required. For example, when a patient has abdominal pain in the ED, there is not likely going to be a verification status. The data type is CodeableConcept because verificationStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity.

Control0..1
This element is affected by the following invariants: con-3, con-5
BindingThe codes SHALL be taken from ConditionVerificationStatushttp://hl7.org/fhir/ValueSet/condition-ver-status|4.0.1
(required to http://hl7.org/fhir/ValueSet/condition-ver-status|4.0.1)

The verification status to support or decline the clinical status of the condition or diagnosis.

TypeCodeableConcept
Is Modifiertrue because This element is labeled as a modifier because the status contains the code refuted and entered-in-error that mark the Condition as not currently valid.
Must Supporttrue
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
18. Condition.category
Definition

A category assigned to the condition.

Shortproblem-list-item | encounter-diagnosis
Comments

The categorization is often highly contextual and may appear poorly differentiated or not very useful in other contexts.

Control10..1*
BindingUnless not suitable, these codes SHALL be taken from ConditionCategoryCodeshttp://hl7.org/fhir/ValueSet/condition-category
(extensible to http://hl7.org/fhir/ValueSet/condition-category)

A category assigned to the condition.

TypeCodeableConcept
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
20. Condition.code
Definition

Identification of the condition, problem or diagnosis.

ShortIdentification of the condition, problem or diagnosis
Control10..1
BindingUnless not suitable, these codes SHALL be taken from For example codes, see US Core Condition Codeshttp://hl7.org/fhir/ValueSet/condition-code
(extensible to http://hl7.org/fhir/us/core/ValueSet/us-core-condition-code)

The set of codes indicating the diagnosis


Identification of the condition or diagnosis.

TypeCodeableConcept
Is Modifierfalse
Must Supporttrue
Summarytrue
Requirements

0..1 to account for primarily narrative only resources.

Alternate Namestype
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
22. Condition.subject
Definition

Indicates the patient or group who the condition record is associated with.

ShortWho has the condition?
Control1..1
TypeReference(De-Identified UDS Plus Patient, Patient, Group)
Is Modifierfalse
Must Supporttrue
Summarytrue
Requirements

Group is typically used for veterinary or public health use cases.

Alternate Namespatient
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
24. Condition.subject.display
Definition

Plain text narrative that identifies the resource in addition to the resource reference.

ShortText alternative for the resource
Comments

This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

Control0..01
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
26. Condition.encounter
Definition

The Encounter during which this Condition was created or to which the creation of this record is tightly associated.

ShortEncounter created as part of
Comments

This will typically be the encounter the event occurred within, but some activities may be initiated prior to or after the official completion of an encounter but still be tied to the context of the encounter. This record indicates the encounter this particular record is associated with. In the case of a "new" diagnosis reflecting ongoing/revised information about the condition, this might be distinct from the first encounter in which the underlying condition was first "known".

Control0..1
TypeReference(De-Identified UDS Plus Encounter, Encounter)
Is Modifierfalse
Must Supporttrue
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
28. Condition.encounter.display
Definition

Plain text narrative that identifies the resource in addition to the resource reference.

ShortText alternative for the resource
Comments

This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

Control0..01
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
30. Condition.onset[x]
Definition

Estimated or actual date or date-time the condition began, in the opinion of the clinician.

ShortEstimated or actual date, date-time, or age
Comments

Age is generally used when the patient reports an age at which the Condition began to occur.

Control0..1
TypeChoice of: dateTime, Period, string, Range, Age
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Must Support TypesdateTime
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
uds-plus-diag-2: All dateTime data elements should be truncated to a year only for de-identified resources. ($this is DateTime implies $this.toString().length() = 4)
uds-plus-diag-3: All Period.start data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.start.exists() implies $this.start.toString().length() = 4)
uds-plus-diag-4: All Period.emd data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.end.exists() implies $this.end.toString().length() = 4)
32. Condition.abatement[x]
Definition

The date or estimated date that the condition resolved or went into remission. This is called "abatement" because of the many overloaded connotations associated with "remission" or "resolution" - Conditions are never really resolved, but they can abate.

ShortWhen in resolution/remission
Comments

There is no explicit distinction between resolution and remission because in many cases the distinction is not clear. Age is generally used when the patient reports an age at which the Condition abated. If there is no abatement element, it is unknown whether the condition has resolved or entered remission; applications and users should generally assume that the condition is still valid. When abatementString exists, it implies the condition is abated.

Control0..1
This element is affected by the following invariants: con-4
TypeChoice of: dateTime, Period, string, Range, Age
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Must Support TypesNo must-support rules about the choice of types/profiles
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
uds-plus-diag-5: All dateTime data elements should be truncated to a year only for de-identified resources. ($this is DateTime implies $this.toString().length() = 4)
uds-plus-diag-6: All Period.start data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.start.exists() implies $this.start.toString().length() = 4)
uds-plus-diag-7: All Period.emd data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.end.exists() implies $this.end.toString().length() = 4)
34. Condition.recordedDate
Definition

The recordedDate represents when this particular Condition record was created in the system, which is often a system-generated date.

ShortDate record was first recorded
Control0..1
TypedateTime
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
uds-plus-diag-8: All dateTime data elements should be truncated to a year only for de-identified resources. ($this.toString().length() = 4)
36. Condition.note
Definition

Additional information about the Condition. This is a general notes/comments entry for description of the Condition, its diagnosis and prognosis.

ShortAdditional information about the Condition
Control0..0*
TypeAnnotation
Is Modifierfalse
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

Guidance on how to interpret the contents of this table can be found here

0. Condition
Definition

The UDS+ profile is based on the Condition resource and establishes the core elements, extensions, vocabularies and value sets for representing Diagnosis for UDS+ program.

ShortDe-Identified UDS Plus Diagnosis
Control0..*
Is Modifierfalse
Summaryfalse
Invariantscon-3: Condition.clinicalStatus SHALL be present if verificationStatus is not entered-in-error and category is problem-list-item (clinicalStatus.exists() or verificationStatus.coding.where(system='http://terminology.hl7.org/CodeSystem/condition-ver-status' and code = 'entered-in-error').exists() or category.select($this='problem-list-item').empty())
con-4: If condition is abated, then clinicalStatus must be either inactive, resolved, or remission (abatement.empty() or clinicalStatus.coding.where(system='http://terminology.hl7.org/CodeSystem/condition-clinical' and (code='resolved' or code='remission' or code='inactive')).exists())
con-5: Condition.clinicalStatus SHALL NOT be present if verification Status is entered-in-error (verificationStatus.coding.where(system='http://terminology.hl7.org/CodeSystem/condition-ver-status' and code='entered-in-error').empty() or clinicalStatus.empty())
dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
2. Condition.id
Definition

De-dentified condition resource identifier.

ShortThe de-identified Condition identifier created by the health center to send data to UDS+ Data Receiver
Comments

The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

Control0..1
Typeid
Is Modifierfalse
Must Supporttrue
Summarytrue
4. Condition.meta
Definition

The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

ShortMetadata about the resource
Control0..1
TypeMeta
Is Modifierfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
6. Condition.implicitRules
Definition

A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

ShortA set of rules under which this content was created
Comments

Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

Control0..1
Typeuri
Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
8. Condition.language
Definition

The base language in which the resource is written.

ShortLanguage of the resource content
Comments

Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

Control0..1
BindingThe codes SHOULD be taken from CommonLanguages
(preferred to http://hl7.org/fhir/ValueSet/languages)

A human language.

Additional BindingsPurpose
AllLanguagesMax Binding
Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
10. Condition.text
Definition

A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.

ShortCannot include any text in the resource as part of the de-identified data.
Comments

Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.

Control0..0
TypeNarrative
Is Modifierfalse
Must Supportfalse
Summaryfalse
Alternate Namesnarrative, html, xhtml, display
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
12. Condition.contained
Definition

These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.

ShortCannot include any contained resources in the resource as part of the de-identified data.
Comments

This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

Control0..0
TypeResource
Is Modifierfalse
Must Supportfalse
Summaryfalse
Alternate Namesinline resources, anonymous resources, contained resources
14. Condition.extension
Definition

An Extension

ShortExtension
Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
SlicingThis element introduces a set of slices on Condition.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 16. Condition.extension:assertedDate
    Slice NameassertedDate
    Definition

    When the asserter identified the allergy, intolerance, condition, problem, or diagnosis or other event, situation, issue, or clinical concept that may have risen to a level of or remains a concern. For example, when the patient experiences chest pain, the asserted date represents when the clinician began following the chest pain - not when the patient experienced the chest pain. Asserted date supports the recognition that information is not always entered in a system immediately. Assertion and recording are different acts, so asserted date and recorded date are semantically different. However, they may be the same date and close in time. If this difference is significant for your use case, assertion date may be useful.

    ShortDate the allergy, intolerance, condition, problem, or diagnosis or other event, situation, issue, or clinical concept was first asserted
    Comments

    The assertedDate is in the context of the recording practitioner and might not be the same as the recordedDate.

    Control0..1
    TypeExtension(Condition Asserted Date) (Extension Type: dateTime)
    Is Modifierfalse
    Must Supporttrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
    uds-plus-diag-1: All dateTime data elements should be truncated to a year only for de-identified resources. ($this.value.ofType(dateTime) implies $this.value.ofType(dateTime).toString().length() = 4)
    18. Condition.modifierExtension
    Definition

    May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

    ShortExtensions that cannot be ignored
    Comments

    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

    Control0..*
    TypeExtension
    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
    Summaryfalse
    Requirements

    Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

    Alternate Namesextensions, user content
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
    20. Condition.identifier
    Definition

    Business identifiers assigned to this condition by the performer or other systems which remain constant as the resource is updated and propagates from server to server.

    ShortExternal Ids for this condition
    Comments

    This is a business identifier, not a resource identifier (see discussion). It is best practice for the identifier to only appear on a single resource instance, however business practices may occasionally dictate that multiple resource instances with the same identifier can exist - possibly even with different resource types. For example, multiple Patient and a Person resource instance might share the same social insurance number.

    NoteThis is a business identifier, not a resource identifier (see discussion)
    Control0..*
    TypeIdentifier
    Is Modifierfalse
    Summarytrue
    Requirements

    Allows identification of the condition as it is known by various participating systems and in a way that remains consistent across servers.

    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    22. Condition.clinicalStatus
    Definition

    The clinical status of the condition.

    Shortactive | recurrence | relapse | inactive | remission | resolved
    Comments

    The data type is CodeableConcept because clinicalStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity.

    Control0..1
    This element is affected by the following invariants: con-3, con-4, con-5
    BindingThe codes SHALL be taken from ConditionClinicalStatusCodes
    (required to http://hl7.org/fhir/ValueSet/condition-clinical|4.0.1)

    The clinical status of the condition or diagnosis.

    TypeCodeableConcept
    Is Modifiertrue because This element is labeled as a modifier because the status contains codes that mark the condition as no longer active.
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    24. Condition.verificationStatus
    Definition

    The verification status to support the clinical status of the condition.

    Shortunconfirmed | provisional | differential | confirmed | refuted | entered-in-error
    Comments

    verificationStatus is not required. For example, when a patient has abdominal pain in the ED, there is not likely going to be a verification status. The data type is CodeableConcept because verificationStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity.

    Control0..1
    This element is affected by the following invariants: con-3, con-5
    BindingThe codes SHALL be taken from ConditionVerificationStatus
    (required to http://hl7.org/fhir/ValueSet/condition-ver-status|4.0.1)

    The verification status to support or decline the clinical status of the condition or diagnosis.

    TypeCodeableConcept
    Is Modifiertrue because This element is labeled as a modifier because the status contains the code refuted and entered-in-error that mark the Condition as not currently valid.
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    26. Condition.category
    Definition

    A category assigned to the condition.

    Shortproblem-list-item | encounter-diagnosis
    Comments

    The categorization is often highly contextual and may appear poorly differentiated or not very useful in other contexts.

    Control1..1
    BindingUnless not suitable, these codes SHALL be taken from ConditionCategoryCodes
    (extensible to http://hl7.org/fhir/ValueSet/condition-category)

    A category assigned to the condition.

    TypeCodeableConcept
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    28. Condition.severity
    Definition

    A subjective assessment of the severity of the condition as evaluated by the clinician.

    ShortSubjective severity of condition
    Comments

    Coding of the severity with a terminology is preferred, where possible.

    Control0..1
    BindingThe codes SHOULD be taken from Condition/DiagnosisSeverity
    (preferred to http://hl7.org/fhir/ValueSet/condition-severity)

    A subjective assessment of the severity of the condition as evaluated by the clinician.

    TypeCodeableConcept
    Is Modifierfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    30. Condition.code
    Definition

    Identification of the condition, problem or diagnosis.

    ShortIdentification of the condition, problem or diagnosis
    Control1..1
    BindingUnless not suitable, these codes SHALL be taken from US Core Condition Codes
    (extensible to http://hl7.org/fhir/us/core/ValueSet/us-core-condition-code)

    The set of codes indicating the diagnosis

    TypeCodeableConcept
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Requirements

    0..1 to account for primarily narrative only resources.

    Alternate Namestype
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    32. Condition.bodySite
    Definition

    The anatomical location where this condition manifests itself.

    ShortAnatomical location, if relevant
    Comments

    Only used if not implicit in code found in Condition.code. If the use case requires attributes from the BodySite resource (e.g. to identify and track separately) then use the standard extension bodySite. May be a summary code, or a reference to a very precise definition of the location, or both.

    Control0..*
    BindingFor example codes, see SNOMEDCTBodyStructures
    (example to http://hl7.org/fhir/ValueSet/body-site)

    Codes describing anatomical locations. May include laterality.

    TypeCodeableConcept
    Is Modifierfalse
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    34. Condition.subject
    Definition

    Indicates the patient or group who the condition record is associated with.

    ShortWho has the condition?
    Control1..1
    TypeReference(De-Identified UDS Plus Patient)
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Requirements

    Group is typically used for veterinary or public health use cases.

    Alternate Namespatient
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    36. Condition.subject.id
    Definition

    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

    ShortUnique id for inter-element referencing
    Control0..1
    Typestring
    Is Modifierfalse
    XML FormatIn the XML format, this property is represented as an attribute.
    Summaryfalse
    38. Condition.subject.extension
    Definition

    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

    ShortAdditional content defined by implementations
    Comments

    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

    Control0..*
    TypeExtension
    Is Modifierfalse
    Summaryfalse
    Alternate Namesextensions, user content
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
    SlicingThis element introduces a set of slices on Condition.subject.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • value @ url
    • 40. Condition.subject.reference
      Definition

      A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

      ShortLiteral reference, Relative, internal or absolute URL
      Comments

      Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

      Control0..1
      This element is affected by the following invariants: ref-1
      Typestring
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      42. Condition.subject.type
      Definition

      The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

      The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

      ShortType the reference refers to (e.g. "Patient")
      Comments

      This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

      Control0..1
      BindingUnless not suitable, these codes SHALL be taken from ResourceType
      (extensible to http://hl7.org/fhir/ValueSet/resource-types)

      Aa resource (or, for logical models, the URI of the logical model).

      Typeuri
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      44. Condition.subject.identifier
      Definition

      An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

      ShortLogical reference, when literal reference is not known
      Comments

      When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

      When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

      Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

      Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

      NoteThis is a business identifier, not a resource identifier (see discussion)
      Control0..1
      TypeIdentifier
      Is Modifierfalse
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      46. Condition.subject.display
      Definition

      Plain text narrative that identifies the resource in addition to the resource reference.

      ShortText alternative for the resource
      Comments

      This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

      Control0..0
      Typestring
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Must Supportfalse
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      48. Condition.encounter
      Definition

      The Encounter during which this Condition was created or to which the creation of this record is tightly associated.

      ShortEncounter created as part of
      Comments

      This will typically be the encounter the event occurred within, but some activities may be initiated prior to or after the official completion of an encounter but still be tied to the context of the encounter. This record indicates the encounter this particular record is associated with. In the case of a "new" diagnosis reflecting ongoing/revised information about the condition, this might be distinct from the first encounter in which the underlying condition was first "known".

      Control0..1
      TypeReference(De-Identified UDS Plus Encounter)
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      50. Condition.encounter.id
      Definition

      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

      ShortUnique id for inter-element referencing
      Control0..1
      Typestring
      Is Modifierfalse
      XML FormatIn the XML format, this property is represented as an attribute.
      Summaryfalse
      52. Condition.encounter.extension
      Definition

      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

      ShortAdditional content defined by implementations
      Comments

      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

      Control0..*
      TypeExtension
      Is Modifierfalse
      Summaryfalse
      Alternate Namesextensions, user content
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
      SlicingThis element introduces a set of slices on Condition.encounter.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ url
      • 54. Condition.encounter.reference
        Definition

        A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

        ShortLiteral reference, Relative, internal or absolute URL
        Comments

        Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

        Control0..1
        This element is affected by the following invariants: ref-1
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        56. Condition.encounter.type
        Definition

        The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

        The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

        ShortType the reference refers to (e.g. "Patient")
        Comments

        This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

        Control0..1
        BindingUnless not suitable, these codes SHALL be taken from ResourceType
        (extensible to http://hl7.org/fhir/ValueSet/resource-types)

        Aa resource (or, for logical models, the URI of the logical model).

        Typeuri
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        58. Condition.encounter.identifier
        Definition

        An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

        ShortLogical reference, when literal reference is not known
        Comments

        When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

        When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

        Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

        Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

        NoteThis is a business identifier, not a resource identifier (see discussion)
        Control0..1
        TypeIdentifier
        Is Modifierfalse
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        60. Condition.encounter.display
        Definition

        Plain text narrative that identifies the resource in addition to the resource reference.

        ShortText alternative for the resource
        Comments

        This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

        Control0..0
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supportfalse
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        62. Condition.onset[x]
        Definition

        Estimated or actual date or date-time the condition began, in the opinion of the clinician.

        ShortEstimated or actual date, date-time, or age
        Comments

        Age is generally used when the patient reports an age at which the Condition began to occur.

        Control0..1
        TypeChoice of: dateTime, Period
        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Must Support TypesdateTime
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        uds-plus-diag-2: All dateTime data elements should be truncated to a year only for de-identified resources. ($this is DateTime implies $this.toString().length() = 4)
        uds-plus-diag-3: All Period.start data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.start.exists() implies $this.start.toString().length() = 4)
        uds-plus-diag-4: All Period.emd data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.end.exists() implies $this.end.toString().length() = 4)
        64. Condition.abatement[x]
        Definition

        The date or estimated date that the condition resolved or went into remission. This is called "abatement" because of the many overloaded connotations associated with "remission" or "resolution" - Conditions are never really resolved, but they can abate.

        ShortWhen in resolution/remission
        Comments

        There is no explicit distinction between resolution and remission because in many cases the distinction is not clear. Age is generally used when the patient reports an age at which the Condition abated. If there is no abatement element, it is unknown whether the condition has resolved or entered remission; applications and users should generally assume that the condition is still valid. When abatementString exists, it implies the condition is abated.

        Control0..1
        This element is affected by the following invariants: con-4
        TypeChoice of: dateTime, Period
        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Must Support TypesNo must-support rules about the choice of types/profiles
        Summaryfalse
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        uds-plus-diag-5: All dateTime data elements should be truncated to a year only for de-identified resources. ($this is DateTime implies $this.toString().length() = 4)
        uds-plus-diag-6: All Period.start data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.start.exists() implies $this.start.toString().length() = 4)
        uds-plus-diag-7: All Period.emd data elements should be truncated to a year only for de-identified resources. ($this is Period and Period.end.exists() implies $this.end.toString().length() = 4)
        66. Condition.recordedDate
        Definition

        The recordedDate represents when this particular Condition record was created in the system, which is often a system-generated date.

        ShortDate record was first recorded
        Control0..1
        TypedateTime
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        uds-plus-diag-8: All dateTime data elements should be truncated to a year only for de-identified resources. ($this.toString().length() = 4)
        68. Condition.recorder
        Definition

        Individual who recorded the record and takes responsibility for its content.

        ShortWho recorded the condition
        Control0..1
        TypeReference(Practitioner, PractitionerRole, Patient, RelatedPerson)
        Is Modifierfalse
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        70. Condition.recorder.id
        Definition

        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

        ShortUnique id for inter-element referencing
        Control0..1
        Typestring
        Is Modifierfalse
        XML FormatIn the XML format, this property is represented as an attribute.
        Summaryfalse
        72. Condition.recorder.extension
        Definition

        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

        ShortAdditional content defined by implementations
        Comments

        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

        Control0..*
        TypeExtension
        Is Modifierfalse
        Summaryfalse
        Alternate Namesextensions, user content
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
        SlicingThis element introduces a set of slices on Condition.recorder.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • value @ url
        • 74. Condition.recorder.reference
          Definition

          A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

          ShortLiteral reference, Relative, internal or absolute URL
          Comments

          Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

          Control0..1
          This element is affected by the following invariants: ref-1
          Typestring
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          76. Condition.recorder.type
          Definition

          The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

          The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

          ShortType the reference refers to (e.g. "Patient")
          Comments

          This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

          Control0..1
          BindingUnless not suitable, these codes SHALL be taken from ResourceType
          (extensible to http://hl7.org/fhir/ValueSet/resource-types)

          Aa resource (or, for logical models, the URI of the logical model).

          Typeuri
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          78. Condition.recorder.identifier
          Definition

          An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

          ShortLogical reference, when literal reference is not known
          Comments

          When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

          When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

          Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

          Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

          NoteThis is a business identifier, not a resource identifier (see discussion)
          Control0..1
          TypeIdentifier
          Is Modifierfalse
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          80. Condition.recorder.display
          Definition

          Plain text narrative that identifies the resource in addition to the resource reference.

          ShortText alternative for the resource
          Comments

          This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

          Control0..0
          Typestring
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supportfalse
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          82. Condition.asserter
          Definition

          Individual who is making the condition statement.

          ShortPerson who asserts this condition
          Control0..1
          TypeReference(Practitioner, PractitionerRole, Patient, RelatedPerson)
          Is Modifierfalse
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          84. Condition.asserter.id
          Definition

          Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

          ShortUnique id for inter-element referencing
          Control0..1
          Typestring
          Is Modifierfalse
          XML FormatIn the XML format, this property is represented as an attribute.
          Summaryfalse
          86. Condition.asserter.extension
          Definition

          May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

          ShortAdditional content defined by implementations
          Comments

          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

          Control0..*
          TypeExtension
          Is Modifierfalse
          Summaryfalse
          Alternate Namesextensions, user content
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
          SlicingThis element introduces a set of slices on Condition.asserter.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ url
          • 88. Condition.asserter.reference
            Definition

            A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

            ShortLiteral reference, Relative, internal or absolute URL
            Comments

            Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

            Control0..1
            This element is affected by the following invariants: ref-1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            90. Condition.asserter.type
            Definition

            The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

            The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

            ShortType the reference refers to (e.g. "Patient")
            Comments

            This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

            Control0..1
            BindingUnless not suitable, these codes SHALL be taken from ResourceType
            (extensible to http://hl7.org/fhir/ValueSet/resource-types)

            Aa resource (or, for logical models, the URI of the logical model).

            Typeuri
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            92. Condition.asserter.identifier
            Definition

            An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

            ShortLogical reference, when literal reference is not known
            Comments

            When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

            When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

            Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

            Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

            NoteThis is a business identifier, not a resource identifier (see discussion)
            Control0..1
            TypeIdentifier
            Is Modifierfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            94. Condition.asserter.display
            Definition

            Plain text narrative that identifies the resource in addition to the resource reference.

            ShortText alternative for the resource
            Comments

            This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

            Control0..0
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            96. Condition.stage
            Definition

            Clinical stage or grade of a condition. May include formal severity assessments.

            ShortStage/grade, usually assessed formally
            Control0..*
            TypeBackboneElement
            Is Modifierfalse
            Summaryfalse
            Invariantscon-1: Stage SHALL have summary or assessment (summary.exists() or assessment.exists())
            ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            98. Condition.stage.id
            Definition

            Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

            ShortUnique id for inter-element referencing
            Control0..1
            Typestring
            Is Modifierfalse
            XML FormatIn the XML format, this property is represented as an attribute.
            Summaryfalse
            100. Condition.stage.extension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

            ShortAdditional content defined by implementations
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifierfalse
            Summaryfalse
            Alternate Namesextensions, user content
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            102. Condition.stage.modifierExtension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored even if unrecognized
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
            Summarytrue
            Requirements

            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

            Alternate Namesextensions, user content, modifiers
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            104. Condition.stage.summary
            Definition

            A simple summary of the stage such as "Stage 3". The determination of the stage is disease-specific.

            ShortSimple summary (disease specific)
            Control0..1
            This element is affected by the following invariants: con-1
            BindingFor example codes, see ConditionStage
            (example to http://hl7.org/fhir/ValueSet/condition-stage)

            Codes describing condition stages (e.g. Cancer stages).

            TypeCodeableConcept
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            106. Condition.stage.assessment
            Definition

            Reference to a formal record of the evidence on which the staging assessment is based.

            ShortFormal record of assessment
            Control0..*
            This element is affected by the following invariants: con-1
            TypeReference(ClinicalImpression, DiagnosticReport, Observation)
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            108. Condition.stage.type
            Definition

            The kind of staging, such as pathological or clinical staging.

            ShortKind of staging
            Control0..1
            BindingFor example codes, see ConditionStageType
            (example to http://hl7.org/fhir/ValueSet/condition-stage-type)

            Codes describing the kind of condition staging (e.g. clinical or pathological).

            TypeCodeableConcept
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            110. Condition.evidence
            Definition

            Supporting evidence / manifestations that are the basis of the Condition's verification status, such as evidence that confirmed or refuted the condition.

            ShortSupporting evidence
            Comments

            The evidence may be a simple list of coded symptoms/manifestations, or references to observations or formal assessments, or both.

            Control0..*
            TypeBackboneElement
            Is Modifierfalse
            Summaryfalse
            Invariantscon-2: evidence SHALL have code or details (code.exists() or detail.exists())
            ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            112. Condition.evidence.id
            Definition

            Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

            ShortUnique id for inter-element referencing
            Control0..1
            Typestring
            Is Modifierfalse
            XML FormatIn the XML format, this property is represented as an attribute.
            Summaryfalse
            114. Condition.evidence.extension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

            ShortAdditional content defined by implementations
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifierfalse
            Summaryfalse
            Alternate Namesextensions, user content
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            116. Condition.evidence.modifierExtension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored even if unrecognized
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
            Summarytrue
            Requirements

            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

            Alternate Namesextensions, user content, modifiers
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            118. Condition.evidence.code
            Definition

            A manifestation or symptom that led to the recording of this condition.

            ShortManifestation/symptom
            Control0..*
            This element is affected by the following invariants: con-2
            BindingFor example codes, see ManifestationAndSymptomCodes
            (example to http://hl7.org/fhir/ValueSet/manifestation-or-symptom)

            Codes that describe the manifestation or symptoms of a condition.

            TypeCodeableConcept
            Is Modifierfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            120. Condition.evidence.detail
            Definition

            Links to other relevant information, including pathology reports.

            ShortSupporting information found elsewhere
            Control0..*
            This element is affected by the following invariants: con-2
            TypeReference(Resource)
            Is Modifierfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            122. Condition.note
            Definition

            Additional information about the Condition. This is a general notes/comments entry for description of the Condition, its diagnosis and prognosis.

            ShortAdditional information about the Condition
            Control0..0
            TypeAnnotation
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))