# CQM Applies To - Quality Measure Implementation Guide v2.0.0-ballot

## Extension: CQM Applies To 

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**

**Usage info**

**Usages:**

* Use this Extension: [CQM Computable Measure](StructureDefinition-cqm-computablemeasure.md)
* Examples for this Extension: [EXM55](Measure-EXM55-FHIR.md) and [MeasureEXM](Measure-EXMLogic-FHIR.md)

You can also check for [usages in the FHIR IG Statistics](https://packages2.fhir.org/xig/hl7.fhir.uv.cqm|current/StructureDefinition/cqm-appliesTo)

### Formal Views of Extension Content

 [Description Differentials, Snapshots, and other representations](http://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#structure-definitions). 

 

Other representations of profile: [CSV](../StructureDefinition-cqm-appliesTo.csv), [Excel](../StructureDefinition-cqm-appliesTo.xlsx), [Schematron](../StructureDefinition-cqm-appliesTo.sch) 



## Resource Content

```json
{
  "resourceType" : "StructureDefinition",
  "id" : "cqm-appliesTo",
  "extension" : [{
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "cqi"
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger" : 4,
    "_valueInteger" : {
      "extension" : [{
        "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
        "valueCanonical" : "http://hl7.org/fhir/uv/cqm/ImplementationGuide/hl7.fhir.uv.cqm"
      }]
    }
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode" : "trial-use",
    "_valueCode" : {
      "extension" : [{
        "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
        "valueCanonical" : "http://hl7.org/fhir/uv/cqm/ImplementationGuide/hl7.fhir.uv.cqm"
      }]
    }
  }],
  "url" : "http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-appliesTo",
  "identifier" : [{
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:oid:2.16.840.1.113883.4.642.40.61.42.2"
  }],
  "version" : "1.0.0",
  "name" : "CQMAppliesTo",
  "title" : "CQM Applies To",
  "status" : "active",
  "experimental" : false,
  "date" : "2026-04-07T02:06:45+10:00",
  "publisher" : "HL7 International / Clinical Quality Information",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/cqi"
    }]
  }],
  "description" : "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).",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "code" : "001"
    }]
  }],
  "fhirVersion" : "4.0.1",
  "mapping" : [{
    "identity" : "rim",
    "uri" : "http://hl7.org/v3",
    "name" : "RIM Mapping"
  }],
  "kind" : "complex-type",
  "abstract" : false,
  "context" : [{
    "type" : "element",
    "expression" : "Measure.group.stratifier"
  }],
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "id" : "Extension",
      "path" : "Extension",
      "short" : "Which population does this stratifier apply to?",
      "definition" : "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).",
      "min" : 1,
      "max" : "*"
    },
    {
      "id" : "Extension.url",
      "path" : "Extension.url",
      "type" : [{
        "code" : "uri"
      }],
      "fixedUri" : "http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-appliesTo"
    },
    {
      "id" : "Extension.value[x]",
      "path" : "Extension.value[x]",
      "type" : [{
        "code" : "CodeableConcept"
      }],
      "binding" : {
        "strength" : "extensible",
        "description" : "Indicates the population",
        "valueSet" : "http://terminology.hl7.org/ValueSet/measure-population"
      }
    }]
  }
}

```
