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

## Extension: CQM Applies To

Official URL: http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-appliesTo | Version: 1.0.0 | Highlight text changes?
Standards status: Trial-use Active as of 2026-04-07 | Maturity Level: 4 | Computable Name: CQMAppliesTo
Other Identifiers: OID:2.16.840.1.113883.4.642.40.61.42.2

Indicates the population that this stratifier should apply to. If no appliesTo extension is present, the stratifier is calculated based on the result of the population calculation (e.g. the calculated numerator for a proportion scoring).

Context of Use

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

- Element ID: `Measure.group.stratifier`

Usage info

Usages:

- Use this Extension: CQM Computable Measure
- Examples for this Extension: EXM55 and MeasureEXM

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 |  | 1..* | Extension | Which population does this stratifier apply to?
url |  | 1..1 | uri | "http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-appliesTo"
value[x] |  | 0..1 | CodeableConcept | Value of extension Binding: MeasurePopulationType (extensible): Indicates the population
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | extensible | MeasurePopulationType | 📦2.0.0 | THO v7.1

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 1..* | Extension | Which population does this stratifier apply to?
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-appliesTo"
value[x] |  | 0..1 | CodeableConcept | Value of extension Binding: MeasurePopulationType (extensible): Indicates the population
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | extensible | MeasurePopulationType | 📦2.0.0 | THO v7.1

#### 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 CodeableConcept: Indicates the population that this stratifier should apply to. If no appliesTo extension is present, the stratifier is calculated based on the result of the population calculation (e.g. the calculated numerator for a proportion scoring).

Maturity: 4

Differential ViewDifferential View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 1..* | Extension | Which population does this stratifier apply to?
url |  | 1..1 | uri | "http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-appliesTo"
value[x] |  | 0..1 | CodeableConcept | Value of extension Binding: MeasurePopulationType (extensible): Indicates the population
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | extensible | MeasurePopulationType | 📦2.0.0 | THO v7.1

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 1..* | Extension | Which population does this stratifier apply to?
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-appliesTo"
value[x] |  | 0..1 | CodeableConcept | Value of extension Binding: MeasurePopulationType (extensible): Indicates the population
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | extensible | MeasurePopulationType | 📦2.0.0 | THO v7.1

#### 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 CodeableConcept: Indicates the population that this stratifier should apply to. If no appliesTo extension is present, the stratifier is calculated based on the result of the population calculation (e.g. the calculated numerator for a proportion scoring).

Maturity: 4

Other representations of profile: CSV, Excel, Schematron