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

## Extension: US Quality Core USCDI+ Quality Extension

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

This extension is only used in the US Quality Core Implementation Guide's Profile StructureDefinition elements.

Context of Use

This extension may be used on the following element(s)

- Element ID: `ElementDefinition`
- Element ID: `ElementDefinition.type.targetProfile`
- Element ID: `ElementDefinition.type`

Usage info

Usages:

- Examples for this Extension: USQualityCoreAdverseEvent, USQualityCoreAllergyIntolerance, USQualityCoreCarePlan, USQualityCoreCareTeam... Show 36 more, USQualityCoreConditionEncounterDiagnosis, USQualityCoreConditionProblemsHealthConcerns, USQualityCoreCoverage, USQualityCoreDeviceNotRequested, USQualityCoreDeviceRequest, USQualityCoreDiagnosticReportLab, USQualityCoreDiagnosticReportNote, USQualityCoreEncounter, USQualityCoreFamilyMemberHistory, USQualityCoreGoal, USQualityCoreImmunization, USQualityCoreImmunizationNotDone, USQualityCoreLocation, USQualityCoreMedication, USQualityCoreMedicationAdministration, USQualityCoreMedicationAdministrationNotDone, USQualityCoreMedicationDispense, USQualityCoreMedicationDispenseDeclined, USQualityCoreMedicationNotRequested, USQualityCoreMedicationRequest, USQualityCoreObservationClinicalResult, USQualityCoreLaboratoryResultObservation, USQualityCoreObservationScreeningAssessment, USQualityCoreObservationCancelled, USQualityCoreOrganization, USQualityCorePatient, USQualityCorePractitioner, USQualityCorePractitionerRole, USQualityCoreProcedure, USQualityCoreProcedureNotDone, USQualityCoreRelatedPerson, USQualityCoreServiceNotRequested, USQualityCoreServiceRequest, USQualityCoreSimpleObservation, USQualityCoreTask and USQualityCoreTaskRejected

You can also check for usages in the FHIR IG Statistics

### Formal Views of Extension Content

Description Differentials, Snapshots, and other representations.

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

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | USCDI+ Quality Element Flag: ONLY USED FOR US Quality Core Profile StructureDefinitions
url |  | 1..1 | uri | "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/uscdiplusquality"
value[x] |  | 1..1 | boolean | Value of extension
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | USCDI+ Quality Element Flag: ONLY USED FOR US Quality Core Profile StructureDefinitions
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/uscdiplusquality"
value[x] |  | 1..1 | boolean | Value of extension
Documentation for this format

#### Constraints

Id | Grade | Path(s) | Description | Expression
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()`

Summary

Simple Extension with the type boolean: This extension is only used in the US Quality Core Implementation Guide's Profile StructureDefinition elements.

Differential ViewDifferential View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | USCDI+ Quality Element Flag: ONLY USED FOR US Quality Core Profile StructureDefinitions
url |  | 1..1 | uri | "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/uscdiplusquality"
value[x] |  | 1..1 | boolean | Value of extension
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | USCDI+ Quality Element Flag: ONLY USED FOR US Quality Core Profile StructureDefinitions
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/uscdiplusquality"
value[x] |  | 1..1 | boolean | Value of extension
Documentation for this format

#### Constraints

Id | Grade | Path(s) | Description | Expression
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()`

Summary

Simple Extension with the type boolean: This extension is only used in the US Quality Core Implementation Guide's Profile StructureDefinition elements.

Other representations of profile: CSV, Excel, Schematron