Quality Measure Implementation Guide
2.0.0-ballot - STU 2 Ballot

Quality Measure Implementation Guide - Downloaded Version null See the Directory of published versions

## Extension: CQM Value Set

Official URL: http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-valueSet | Version: 2.0.0-ballot | Highlight text changes?
Standards status: Trial-use Active as of 2026-04-07 | Maturity Level: 4 | Computable Name: CQMValueSet
Other Identifiers: OID:2.16.840.1.113883.4.642.40.61.42.35

A value set defining the set of possible values that can be used to represent supplemental data or stratifier elements.

Context of Use

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

- Element ID: `Measure.group.stratifier`
- Element ID: `Measure.group.stratifier.component`
- Element ID: `Measure.supplementalData`

Usage info

Usages:

- Use this Extension: CQM Computable Measure
- Examples for this Extension: MeasureAgeStratifiedExample

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..* | Extension | What stratum values?
url |  | 1..1 | uri | "http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-valueSet"
valueCanonical |  | 1..1 | canonical(ValueSet) | Value of extension
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | What stratum values?
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://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-valueSet"
Slices for value[x] |  | 1..1 | canonical() | Value of extension Slice: Unordered, Closed by type:$this
value[x]:valueCanonical |  | 1..1 | canonical(ValueSet) | 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 canonical: A value set defining the set of possible values that can be used to represent supplemental data or stratifier elements.

Maturity: 4

Differential ViewDifferential View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | What stratum values?
url |  | 1..1 | uri | "http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-valueSet"
valueCanonical |  | 1..1 | canonical(ValueSet) | Value of extension
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | What stratum values?
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://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-valueSet"
Slices for value[x] |  | 1..1 | canonical() | Value of extension Slice: Unordered, Closed by type:$this
value[x]:valueCanonical |  | 1..1 | canonical(ValueSet) | 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 canonical: A value set defining the set of possible values that can be used to represent supplemental data or stratifier elements.

Maturity: 4

Other representations of profile: CSV, Excel, Schematron