2026 US Quality Core Implementation Guide
0.5.0 - release

2026 US Quality Core Implementation Guide - Downloaded Version 0.5.0 See the Directory of published versions

## Resource Profile: US Quality Core Task

Official URL: http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-task | Version: 0.5.0 | Highlight text changes?
Active as of 2026-06-05 | Computable Name: USQualityCoreTask

Profile of Task for decision support/quality metrics. Defines the core set of elements and extensions for quality rule and measure authors.

### USCDI+ Quality Element Support Expectations

Systems are expected to support this profile as part of implementing USCDI+ Quality V1 in FHIR and meeting the conformance requirements of this guide.

The following elements are specifically relevant to USCDI+ Quality V1 data classes and elements. Systems are expected to support these elements as applicable to their role in US Quality Core data exchange. See the Must Support section of this guide for more information. These elements are tagged as (USCDI+ Quality) in the formal profile views.

USCDI+ Quality Elements:

- basedOn: (USCDI+ Quality) Request fulfilled by this task
- status: (USCDI+ Quality) draft​ | requested​ | received​ | accepted​ | ready​ | cancelled​ | in-progress​ | on-hold​ | failed​ | completed | entered-in-error
- statusReason: (USCDI+ Quality) Reason for current status
- code: (USCDI+ Quality) Task Type
- focus: (USCDI+ Quality) What task is acting on
- executionPeriod: (USCDI+ Quality)
- reasonCode: (USCDI+ Quality)

The Formal Views section also provides the formal summary, definitions, terminology requirements, and mandatory element requirements.

### Profile Specific Implementation Guidance

To represent that a task was rejected before execution, use the US Quality Core Task Rejected profile.

Usages:

- Examples for this Profile: Task/example
- CapabilityStatements using this Profile: US Quality Core Client CapabilityStatement and US Quality Core Server CapabilityStatement

You can also check for usages in the FHIR IG Statistics

### Formal Views of Profile Content

Description Differentials, Snapshots, and other representations.

- Key Elements Table
- Differential Table
- Snapshot Table
- Statistics/References
- All

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Task | C | 0..* | Task | A task to be performed Constraints: inv-1
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
identifier |  | 1..* | Identifier | Task Instance Identifier
basedOn | Σ | 0..* | Reference(Resource) | (USCDI+ Quality) Request fulfilled by this task
status | ?!Σ | 1..1 | code | (USCDI+ Quality) draft​ | requested​ | received​ | accepted​ | ready​ | cancelled​ | in-progress​ | on-hold​ | failed​ | completed | entered-in-error Binding: Non-Negative Task Status (required)
statusReason | Σ | 0..1 | CodeableConcept | (USCDI+ Quality) Reason for current status Binding Description: (example): Codes to identify the reason for current status. These will typically be specific to a particular workflow.
intent | Σ | 1..1 | code | unknown | proposal | plan | order | original-order | reflex-order | filler-order | instance Binding: TaskIntent (required): Distinguishes whether the task is a proposal, plan or full order.
priority |  | 1..1 | code | routine | urgent | asap | stat Binding: RequestPriority (required): The task's priority.
code | Σ | 1..1 | CodeableConcept | (USCDI+ Quality) Task Type Binding: TaskCode (preferred): Codes to identify what the task involves. These will typically be specific to a particular workflow
focus | Σ | 0..1 | Reference(Resource) | (USCDI+ Quality) What task is acting on
executionPeriod | Σ | 1..1 | Period | (USCDI+ Quality)
reasonCode |  | 0..1 | CodeableConcept | (USCDI+ Quality) Binding Description: (example): Indicates why the task is needed. E.g. Suspended because patient admitted to hospital.
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Task.status | Base | required | Non-Negative Task Status | 📦0.5.0 | This IG
Task.statusReason | Base | example |  | Not State | Unknown
Task.intent | Base | required | TaskIntent | 📍4.0.1 | FHIR Std.
Task.priority | Base | required | Request priority | 📍4.0.1 | FHIR Std.
Task.code | Base | preferred | Task Codes | 📦4.0.1 | FHIR Std.
Task.reasonCode | Base | example |  | Not State | Unknown

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | Task | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | Task | 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 | error | Task | 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 | error | Task | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | Task | A resource should have narrative for robust management | `text.`div`.exists()`
ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`
inv-1 | error | Task | Last modified date must be greater than or equal to authored-on date. | `lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn`

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Task |  | 0..* | Task | A task to be performed
identifier |  | 1..* | Identifier | Task Instance Identifier
basedOn |  | 0..* | Reference(Resource) | (USCDI+ Quality) Request fulfilled by this task
status |  | 1..1 | code | (USCDI+ Quality) draft​ | requested​ | received​ | accepted​ | ready​ | cancelled​ | in-progress​ | on-hold​ | failed​ | completed | entered-in-error Binding: Non-Negative Task Status (required)
statusReason |  | 0..1 | CodeableConcept | (USCDI+ Quality) Reason for current status
intent |  | 1..1 | code | unknown | proposal | plan | order | original-order | reflex-order | filler-order | instance
priority |  | 1..1 | code | routine | urgent | asap | stat
code |  | 1..1 | CodeableConcept | (USCDI+ Quality) Task Type Binding: TaskCode (preferred): Codes to identify what the task involves. These will typically be specific to a particular workflow
focus |  | 0..1 | Reference(Resource) | (USCDI+ Quality) What task is acting on
executionPeriod |  | 1..1 | Period | (USCDI+ Quality)
reasonCode |  | 0..1 | CodeableConcept | (USCDI+ Quality)
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
Task.status | Base | required | Non-Negative Task Status | 📦0.5.0 | This IG
Task.code | Base | preferred | Task Codes | 📦4.0.1 | FHIR Std.

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Task | C | 0..* | Task | A task to be performed Constraints: inv-1
id | Σ | 0..1 | id | Logical id of this artifact
meta | Σ | 0..1 | Meta | Metadata about the resource
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
language |  | 0..1 | code | Language of the resource content Binding: CommonLanguages (preferred): A human language.
Additional Bindings | Purpose
AllLanguages | Max Binding
text |  | 0..1 | Narrative | Text summary of the resource, for human interpretation This profile does not constrain the narrative in regard to content, language, or traceability to data elements
contained |  | 0..* | Resource | Contained, inline Resources
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
identifier |  | 1..* | Identifier | Task Instance Identifier
instantiatesCanonical | Σ | 0..1 | canonical(ActivityDefinition) | Formal definition of task
instantiatesUri | Σ | 0..1 | uri | Formal definition of task
basedOn | Σ | 0..* | Reference(Resource) | (USCDI+ Quality) Request fulfilled by this task
groupIdentifier | Σ | 0..1 | Identifier | Requisition or grouper id
partOf | Σ | 0..* | Reference(Task) | Composite task
status | ?!Σ | 1..1 | code | (USCDI+ Quality) draft​ | requested​ | received​ | accepted​ | ready​ | cancelled​ | in-progress​ | on-hold​ | failed​ | completed | entered-in-error Binding: Non-Negative Task Status (required)
statusReason | Σ | 0..1 | CodeableConcept | (USCDI+ Quality) Reason for current status Binding Description: (example): Codes to identify the reason for current status. These will typically be specific to a particular workflow.
businessStatus | Σ | 0..1 | CodeableConcept | E.g. "Specimen collected", "IV prepped" Binding Description: (example): The domain-specific business-contextual sub-state of the task. For example: "Blood drawn", "IV inserted", "Awaiting physician signature", etc.
intent | Σ | 1..1 | code | unknown | proposal | plan | order | original-order | reflex-order | filler-order | instance Binding: TaskIntent (required): Distinguishes whether the task is a proposal, plan or full order.
priority |  | 1..1 | code | routine | urgent | asap | stat Binding: RequestPriority (required): The task's priority.
code | Σ | 1..1 | CodeableConcept | (USCDI+ Quality) Task Type Binding: TaskCode (preferred): Codes to identify what the task involves. These will typically be specific to a particular workflow
description | Σ | 0..1 | string | Human-readable explanation of task
focus | Σ | 0..1 | Reference(Resource) | (USCDI+ Quality) What task is acting on
for | Σ | 0..1 | Reference(Resource) | Beneficiary of the Task
encounter | Σ | 0..1 | Reference(Encounter) | Healthcare event during which this task originated
executionPeriod | Σ | 1..1 | Period | (USCDI+ Quality)
authoredOn | C | 0..1 | dateTime | Task Creation Date
lastModified | Σ C | 0..1 | dateTime | Task Last Modified Date
requester | Σ | 0..1 | Reference(Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson) | Who is asking for task to be done
performerType |  | 0..* | CodeableConcept | Requested performer Binding: ProcedurePerformerRoleCodes (preferred): The type(s) of task performers allowed.
owner | Σ | 0..1 | Reference(Practitioner | PractitionerRole | Organization | CareTeam | HealthcareService | Patient | Device | RelatedPerson) | Responsible individual
location | Σ | 0..1 | Reference(Location) | Where task occurs
reasonCode |  | 0..1 | CodeableConcept | (USCDI+ Quality) Binding Description: (example): Indicates why the task is needed. E.g. Suspended because patient admitted to hospital.
reasonReference |  | 0..1 | Reference(Resource) | Why task is needed
insurance |  | 0..* | Reference(Coverage | ClaimResponse) | Associated insurance coverage
note |  | 0..* | Annotation | Comments made about the task
relevantHistory |  | 0..* | Reference(Provenance) | Key events in history of the Task
restriction |  | 0..1 | BackboneElement | Constraints on fulfillment tasks
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
repetitions |  | 0..1 | positiveInt | How many times to repeat
period |  | 0..1 | Period | When fulfillment sought
recipient |  | 0..* | Reference(Patient | Practitioner | PractitionerRole | RelatedPerson | Group | Organization) | For whom is fulfillment sought?
input |  | 0..* | BackboneElement | Information used to perform task
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
type |  | 1..1 | CodeableConcept | Label for the input Binding Description: (example): Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.
value[x] |  | 1..1 |  | Content to use in performing the task
valueBase64Binary |  |  | base64Binary |
valueBoolean |  |  | boolean |
valueCanonical |  |  | canonical(Any) |
valueCode |  |  | code |
valueDate |  |  | date |
valueDateTime |  |  | dateTime |
valueDecimal |  |  | decimal |
valueId |  |  | id |
valueInstant |  |  | instant |
valueInteger |  |  | integer |
valueMarkdown |  |  | markdown |
valueOid |  |  | oid |
valuePositiveInt |  |  | positiveInt |
valueString |  |  | string |
valueTime |  |  | time |
valueUnsignedInt |  |  | unsignedInt |
valueUri |  |  | uri |
valueUrl |  |  | url |
valueUuid |  |  | uuid |
valueAddress |  |  | Address |
valueAge |  |  | Age |
valueAnnotation |  |  | Annotation |
valueAttachment |  |  | Attachment |
valueCodeableConcept |  |  | CodeableConcept |
valueCoding |  |  | Coding |
valueContactPoint |  |  | ContactPoint |
valueCount |  |  | Count |
valueDistance |  |  | Distance |
valueDuration |  |  | Duration |
valueHumanName |  |  | HumanName |
valueIdentifier |  |  | Identifier |
valueMoney |  |  | Money |
valuePeriod |  |  | Period |
valueQuantity |  |  | Quantity |
valueRange |  |  | Range |
valueRatio |  |  | Ratio |
valueReference |  |  | Reference(Any) |
valueSampledData |  |  | SampledData |
valueSignature |  |  | Signature |
valueTiming |  |  | Timing |
valueContactDetail |  |  | ContactDetail |
valueContributor |  |  | Contributor |
valueDataRequirement |  |  | DataRequirement |
valueExpression |  |  | Expression |
valueParameterDefinition |  |  | ParameterDefinition |
valueRelatedArtifact |  |  | RelatedArtifact |
valueTriggerDefinition |  |  | TriggerDefinition |
valueUsageContext |  |  | UsageContext |
valueDosage |  |  | Dosage |
valueMeta |  |  | Meta |
output |  | 0..* | BackboneElement | Information produced as part of task
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
type |  | 1..1 | CodeableConcept | Label for output Binding Description: (example): Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc.
value[x] |  | 1..1 |  | Result of output
valueBase64Binary |  |  | base64Binary |
valueBoolean |  |  | boolean |
valueCanonical |  |  | canonical(Any) |
valueCode |  |  | code |
valueDate |  |  | date |
valueDateTime |  |  | dateTime |
valueDecimal |  |  | decimal |
valueId |  |  | id |
valueInstant |  |  | instant |
valueInteger |  |  | integer |
valueMarkdown |  |  | markdown |
valueOid |  |  | oid |
valuePositiveInt |  |  | positiveInt |
valueString |  |  | string |
valueTime |  |  | time |
valueUnsignedInt |  |  | unsignedInt |
valueUri |  |  | uri |
valueUrl |  |  | url |
valueUuid |  |  | uuid |
valueAddress |  |  | Address |
valueAge |  |  | Age |
valueAnnotation |  |  | Annotation |
valueAttachment |  |  | Attachment |
valueCodeableConcept |  |  | CodeableConcept |
valueCoding |  |  | Coding |
valueContactPoint |  |  | ContactPoint |
valueCount |  |  | Count |
valueDistance |  |  | Distance |
valueDuration |  |  | Duration |
valueHumanName |  |  | HumanName |
valueIdentifier |  |  | Identifier |
valueMoney |  |  | Money |
valuePeriod |  |  | Period |
valueQuantity |  |  | Quantity |
valueRange |  |  | Range |
valueRatio |  |  | Ratio |
valueReference |  |  | Reference(Any) |
valueSampledData |  |  | SampledData |
valueSignature |  |  | Signature |
valueTiming |  |  | Timing |
valueContactDetail |  |  | ContactDetail |
valueContributor |  |  | Contributor |
valueDataRequirement |  |  | DataRequirement |
valueExpression |  |  | Expression |
valueParameterDefinition |  |  | ParameterDefinition |
valueRelatedArtifact |  |  | RelatedArtifact |
valueTriggerDefinition |  |  | TriggerDefinition |
valueUsageContext |  |  | UsageContext |
valueDosage |  |  | Dosage |
valueMeta |  |  | Meta |
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Task.language | Base | preferred | Common Languages | 📍4.0.1 | FHIR Std.
Task.status | Base | required | Non-Negative Task Status | 📦0.5.0 | This IG
Task.statusReason | Base | example |  | Not State | Unknown
Task.businessStatus | Base | example |  | Not State | Unknown
Task.intent | Base | required | TaskIntent | 📍4.0.1 | FHIR Std.
Task.priority | Base | required | Request priority | 📍4.0.1 | FHIR Std.
Task.code | Base | preferred | Task Codes | 📦4.0.1 | FHIR Std.
Task.performerType | Base | preferred | Procedure Performer Role Codes | 📍4.0.1 | FHIR Std.
Task.reasonCode | Base | example |  | Not State | Unknown
Task.input.type | Base | example |  | Not State | Unknown
Task.output.type | Base | example |  | Not State | Unknown

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | Task | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | Task | 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 | error | Task | 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 | error | Task | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | Task | A resource should have narrative for robust management | `text.`div`.exists()`
ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`
inv-1 | error | Task | Last modified date must be greater than or equal to authored-on date. | `lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn`

Summary

Mandatory: 6 elements

Key Elements View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Task | C | 0..* | Task | A task to be performed Constraints: inv-1
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
identifier |  | 1..* | Identifier | Task Instance Identifier
basedOn | Σ | 0..* | Reference(Resource) | (USCDI+ Quality) Request fulfilled by this task
status | ?!Σ | 1..1 | code | (USCDI+ Quality) draft​ | requested​ | received​ | accepted​ | ready​ | cancelled​ | in-progress​ | on-hold​ | failed​ | completed | entered-in-error Binding: Non-Negative Task Status (required)
statusReason | Σ | 0..1 | CodeableConcept | (USCDI+ Quality) Reason for current status Binding Description: (example): Codes to identify the reason for current status. These will typically be specific to a particular workflow.
intent | Σ | 1..1 | code | unknown | proposal | plan | order | original-order | reflex-order | filler-order | instance Binding: TaskIntent (required): Distinguishes whether the task is a proposal, plan or full order.
priority |  | 1..1 | code | routine | urgent | asap | stat Binding: RequestPriority (required): The task's priority.
code | Σ | 1..1 | CodeableConcept | (USCDI+ Quality) Task Type Binding: TaskCode (preferred): Codes to identify what the task involves. These will typically be specific to a particular workflow
focus | Σ | 0..1 | Reference(Resource) | (USCDI+ Quality) What task is acting on
executionPeriod | Σ | 1..1 | Period | (USCDI+ Quality)
reasonCode |  | 0..1 | CodeableConcept | (USCDI+ Quality) Binding Description: (example): Indicates why the task is needed. E.g. Suspended because patient admitted to hospital.
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Task.status | Base | required | Non-Negative Task Status | 📦0.5.0 | This IG
Task.statusReason | Base | example |  | Not State | Unknown
Task.intent | Base | required | TaskIntent | 📍4.0.1 | FHIR Std.
Task.priority | Base | required | Request priority | 📍4.0.1 | FHIR Std.
Task.code | Base | preferred | Task Codes | 📦4.0.1 | FHIR Std.
Task.reasonCode | Base | example |  | Not State | Unknown

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | Task | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | Task | 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 | error | Task | 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 | error | Task | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | Task | A resource should have narrative for robust management | `text.`div`.exists()`
ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`
inv-1 | error | Task | Last modified date must be greater than or equal to authored-on date. | `lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn`

Differential View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Task |  | 0..* | Task | A task to be performed
identifier |  | 1..* | Identifier | Task Instance Identifier
basedOn |  | 0..* | Reference(Resource) | (USCDI+ Quality) Request fulfilled by this task
status |  | 1..1 | code | (USCDI+ Quality) draft​ | requested​ | received​ | accepted​ | ready​ | cancelled​ | in-progress​ | on-hold​ | failed​ | completed | entered-in-error Binding: Non-Negative Task Status (required)
statusReason |  | 0..1 | CodeableConcept | (USCDI+ Quality) Reason for current status
intent |  | 1..1 | code | unknown | proposal | plan | order | original-order | reflex-order | filler-order | instance
priority |  | 1..1 | code | routine | urgent | asap | stat
code |  | 1..1 | CodeableConcept | (USCDI+ Quality) Task Type Binding: TaskCode (preferred): Codes to identify what the task involves. These will typically be specific to a particular workflow
focus |  | 0..1 | Reference(Resource) | (USCDI+ Quality) What task is acting on
executionPeriod |  | 1..1 | Period | (USCDI+ Quality)
reasonCode |  | 0..1 | CodeableConcept | (USCDI+ Quality)
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
Task.status | Base | required | Non-Negative Task Status | 📦0.5.0 | This IG
Task.code | Base | preferred | Task Codes | 📦4.0.1 | FHIR Std.

Snapshot ViewView

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Task | C | 0..* | Task | A task to be performed Constraints: inv-1
id | Σ | 0..1 | id | Logical id of this artifact
meta | Σ | 0..1 | Meta | Metadata about the resource
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
language |  | 0..1 | code | Language of the resource content Binding: CommonLanguages (preferred): A human language.
Additional Bindings | Purpose
AllLanguages | Max Binding
text |  | 0..1 | Narrative | Text summary of the resource, for human interpretation This profile does not constrain the narrative in regard to content, language, or traceability to data elements
contained |  | 0..* | Resource | Contained, inline Resources
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
identifier |  | 1..* | Identifier | Task Instance Identifier
instantiatesCanonical | Σ | 0..1 | canonical(ActivityDefinition) | Formal definition of task
instantiatesUri | Σ | 0..1 | uri | Formal definition of task
basedOn | Σ | 0..* | Reference(Resource) | (USCDI+ Quality) Request fulfilled by this task
groupIdentifier | Σ | 0..1 | Identifier | Requisition or grouper id
partOf | Σ | 0..* | Reference(Task) | Composite task
status | ?!Σ | 1..1 | code | (USCDI+ Quality) draft​ | requested​ | received​ | accepted​ | ready​ | cancelled​ | in-progress​ | on-hold​ | failed​ | completed | entered-in-error Binding: Non-Negative Task Status (required)
statusReason | Σ | 0..1 | CodeableConcept | (USCDI+ Quality) Reason for current status Binding Description: (example): Codes to identify the reason for current status. These will typically be specific to a particular workflow.
businessStatus | Σ | 0..1 | CodeableConcept | E.g. "Specimen collected", "IV prepped" Binding Description: (example): The domain-specific business-contextual sub-state of the task. For example: "Blood drawn", "IV inserted", "Awaiting physician signature", etc.
intent | Σ | 1..1 | code | unknown | proposal | plan | order | original-order | reflex-order | filler-order | instance Binding: TaskIntent (required): Distinguishes whether the task is a proposal, plan or full order.
priority |  | 1..1 | code | routine | urgent | asap | stat Binding: RequestPriority (required): The task's priority.
code | Σ | 1..1 | CodeableConcept | (USCDI+ Quality) Task Type Binding: TaskCode (preferred): Codes to identify what the task involves. These will typically be specific to a particular workflow
description | Σ | 0..1 | string | Human-readable explanation of task
focus | Σ | 0..1 | Reference(Resource) | (USCDI+ Quality) What task is acting on
for | Σ | 0..1 | Reference(Resource) | Beneficiary of the Task
encounter | Σ | 0..1 | Reference(Encounter) | Healthcare event during which this task originated
executionPeriod | Σ | 1..1 | Period | (USCDI+ Quality)
authoredOn | C | 0..1 | dateTime | Task Creation Date
lastModified | Σ C | 0..1 | dateTime | Task Last Modified Date
requester | Σ | 0..1 | Reference(Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson) | Who is asking for task to be done
performerType |  | 0..* | CodeableConcept | Requested performer Binding: ProcedurePerformerRoleCodes (preferred): The type(s) of task performers allowed.
owner | Σ | 0..1 | Reference(Practitioner | PractitionerRole | Organization | CareTeam | HealthcareService | Patient | Device | RelatedPerson) | Responsible individual
location | Σ | 0..1 | Reference(Location) | Where task occurs
reasonCode |  | 0..1 | CodeableConcept | (USCDI+ Quality) Binding Description: (example): Indicates why the task is needed. E.g. Suspended because patient admitted to hospital.
reasonReference |  | 0..1 | Reference(Resource) | Why task is needed
insurance |  | 0..* | Reference(Coverage | ClaimResponse) | Associated insurance coverage
note |  | 0..* | Annotation | Comments made about the task
relevantHistory |  | 0..* | Reference(Provenance) | Key events in history of the Task
restriction |  | 0..1 | BackboneElement | Constraints on fulfillment tasks
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
repetitions |  | 0..1 | positiveInt | How many times to repeat
period |  | 0..1 | Period | When fulfillment sought
recipient |  | 0..* | Reference(Patient | Practitioner | PractitionerRole | RelatedPerson | Group | Organization) | For whom is fulfillment sought?
input |  | 0..* | BackboneElement | Information used to perform task
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
type |  | 1..1 | CodeableConcept | Label for the input Binding Description: (example): Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.
value[x] |  | 1..1 |  | Content to use in performing the task
valueBase64Binary |  |  | base64Binary |
valueBoolean |  |  | boolean |
valueCanonical |  |  | canonical(Any) |
valueCode |  |  | code |
valueDate |  |  | date |
valueDateTime |  |  | dateTime |
valueDecimal |  |  | decimal |
valueId |  |  | id |
valueInstant |  |  | instant |
valueInteger |  |  | integer |
valueMarkdown |  |  | markdown |
valueOid |  |  | oid |
valuePositiveInt |  |  | positiveInt |
valueString |  |  | string |
valueTime |  |  | time |
valueUnsignedInt |  |  | unsignedInt |
valueUri |  |  | uri |
valueUrl |  |  | url |
valueUuid |  |  | uuid |
valueAddress |  |  | Address |
valueAge |  |  | Age |
valueAnnotation |  |  | Annotation |
valueAttachment |  |  | Attachment |
valueCodeableConcept |  |  | CodeableConcept |
valueCoding |  |  | Coding |
valueContactPoint |  |  | ContactPoint |
valueCount |  |  | Count |
valueDistance |  |  | Distance |
valueDuration |  |  | Duration |
valueHumanName |  |  | HumanName |
valueIdentifier |  |  | Identifier |
valueMoney |  |  | Money |
valuePeriod |  |  | Period |
valueQuantity |  |  | Quantity |
valueRange |  |  | Range |
valueRatio |  |  | Ratio |
valueReference |  |  | Reference(Any) |
valueSampledData |  |  | SampledData |
valueSignature |  |  | Signature |
valueTiming |  |  | Timing |
valueContactDetail |  |  | ContactDetail |
valueContributor |  |  | Contributor |
valueDataRequirement |  |  | DataRequirement |
valueExpression |  |  | Expression |
valueParameterDefinition |  |  | ParameterDefinition |
valueRelatedArtifact |  |  | RelatedArtifact |
valueTriggerDefinition |  |  | TriggerDefinition |
valueUsageContext |  |  | UsageContext |
valueDosage |  |  | Dosage |
valueMeta |  |  | Meta |
output |  | 0..* | BackboneElement | Information produced as part of task
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
type |  | 1..1 | CodeableConcept | Label for output Binding Description: (example): Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc.
value[x] |  | 1..1 |  | Result of output
valueBase64Binary |  |  | base64Binary |
valueBoolean |  |  | boolean |
valueCanonical |  |  | canonical(Any) |
valueCode |  |  | code |
valueDate |  |  | date |
valueDateTime |  |  | dateTime |
valueDecimal |  |  | decimal |
valueId |  |  | id |
valueInstant |  |  | instant |
valueInteger |  |  | integer |
valueMarkdown |  |  | markdown |
valueOid |  |  | oid |
valuePositiveInt |  |  | positiveInt |
valueString |  |  | string |
valueTime |  |  | time |
valueUnsignedInt |  |  | unsignedInt |
valueUri |  |  | uri |
valueUrl |  |  | url |
valueUuid |  |  | uuid |
valueAddress |  |  | Address |
valueAge |  |  | Age |
valueAnnotation |  |  | Annotation |
valueAttachment |  |  | Attachment |
valueCodeableConcept |  |  | CodeableConcept |
valueCoding |  |  | Coding |
valueContactPoint |  |  | ContactPoint |
valueCount |  |  | Count |
valueDistance |  |  | Distance |
valueDuration |  |  | Duration |
valueHumanName |  |  | HumanName |
valueIdentifier |  |  | Identifier |
valueMoney |  |  | Money |
valuePeriod |  |  | Period |
valueQuantity |  |  | Quantity |
valueRange |  |  | Range |
valueRatio |  |  | Ratio |
valueReference |  |  | Reference(Any) |
valueSampledData |  |  | SampledData |
valueSignature |  |  | Signature |
valueTiming |  |  | Timing |
valueContactDetail |  |  | ContactDetail |
valueContributor |  |  | Contributor |
valueDataRequirement |  |  | DataRequirement |
valueExpression |  |  | Expression |
valueParameterDefinition |  |  | ParameterDefinition |
valueRelatedArtifact |  |  | RelatedArtifact |
valueTriggerDefinition |  |  | TriggerDefinition |
valueUsageContext |  |  | UsageContext |
valueDosage |  |  | Dosage |
valueMeta |  |  | Meta |
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Task.language | Base | preferred | Common Languages | 📍4.0.1 | FHIR Std.
Task.status | Base | required | Non-Negative Task Status | 📦0.5.0 | This IG
Task.statusReason | Base | example |  | Not State | Unknown
Task.businessStatus | Base | example |  | Not State | Unknown
Task.intent | Base | required | TaskIntent | 📍4.0.1 | FHIR Std.
Task.priority | Base | required | Request priority | 📍4.0.1 | FHIR Std.
Task.code | Base | preferred | Task Codes | 📦4.0.1 | FHIR Std.
Task.performerType | Base | preferred | Procedure Performer Role Codes | 📍4.0.1 | FHIR Std.
Task.reasonCode | Base | example |  | Not State | Unknown
Task.input.type | Base | example |  | Not State | Unknown
Task.output.type | Base | example |  | Not State | Unknown

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | Task | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | Task | 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 | error | Task | 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 | error | Task | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | Task | A resource should have narrative for robust management | `text.`div`.exists()`
ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`
inv-1 | error | Task | Last modified date must be greater than or equal to authored-on date. | `lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn`

Summary

Mandatory: 6 elements

Other representations of profile: CSV, Excel, Schematron