Quality Measure Implementation Guide
2.0.0-ballot - STU 2 Ballot

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

## Measure: Supporting Evidence Example Measure (Experimental)

Official URL: http://hl7.org/fhir/uv/cqm/Measure/SupportingEvidenceExample | Version: 2.0.0-ballot | Highlight text changes?
Standards status: Informative Draft as of 2025-08-13 | Computable Name: SupportingEvidenceExample
Other Identifiers: OID:2.16.840.1.113883.4.642.40.61.29.28

Example measure illustrating the use of supporting evidence as a way to exchange additional information about particular populations within a measure.

Metadata
Title | Supporting Evidence Example
Version | 2.0.0-ballot
Identifier | urn:oid:2.16.840.1.113883.4.642.40.61.29.28
Status | Draft
Experimental | true
Jurisdiction | 001 from http://unstats.un.org/unsd/methods/m49/m49.htm
Topic | Health Quality Measure Document
Steward (Publisher) | HL7 International / Clinical Quality Information
Description | Example measure illustrating the use of supporting evidence as a way to exchange additional information about particular populations within a measure.
Measure Scoring | ratio from http://terminology.hl7.org/CodeSystem/measure-scoring
Measure Group (Rate) (ID: group-1)
Basis | boolean
Measure Logic
Primary Library | Supporting Evidence Example
Contents | Population Criteria Logic Definitions Terminology Dependencies Data Requirements Parameters
Population Criteria
Measure Group (Rate) (ID: group-1)
Logic Definitions
Logic Definition | Library Name: SupportingEvidenceExample
    // main criteria logic

    define "All Encounters":
         [Encounter] E
Logic Definition | Library Name: SupportingEvidenceExample
    // boolean population results
    // has matching encounter

    define "Initial Population Boolean":
      exists "All Encounters"
Logic Definition | Library Name: SupportingEvidenceExample
    define "Denominator Boolean":
        "Initial Population Boolean"
Logic Definition | Library Name: SupportingEvidenceExample
    define "Encounter Arrived":
        [Encounter] E
           where E.status = 'arrived'
Logic Definition | Library Name: SupportingEvidenceExample
    define "Numerator Exclusion Boolean":
      exists "Encounter Arrived"
Logic Definition | Library Name: SupportingEvidenceExample
    define "Encounters in Period":
         [Encounter] E
           where E.period during "Measurement Period" and E.status='finished'
Logic Definition | Library Name: SupportingEvidenceExample
    define "Numerator Boolean":
      exists "Encounters in Period"
Logic Definition | Library Name: SupportingEvidenceExample
    define "Encounter Cancelled":
        [Encounter] E
           where E.status = 'cancelled'
Logic Definition | Library Name: SupportingEvidenceExample
    define "Denominator Exclusion Boolean":
      exists "Encounter Cancelled"
Logic Definition | Library Name: FHIRHelpers
    define function ToString(value EncounterStatus): value.value
Logic Definition | Library Name: FHIRHelpers
    /*
    @description: Converts the given [Period](https://hl7.org/fhir/datatypes.html#Period)
    value to a CQL DateTime Interval
    @comment: If the start value of the given period is unspecified, the starting
    boundary of the resulting interval will be open (meaning the start of the interval
    is unknown, as opposed to interpreted as the beginning of time).
    */
    define function ToInterval(period FHIR.Period):
        if period is null then
            null
        else
            if period."start" is null then
                Interval(period."start".value, period."end".value]
            else
                Interval[period."start".value, period."end".value]
Terminology
Terminology | None
Dependencies
Dependency | Description: FHIR model information Resource: http://hl7.org/fhir/uv/cql/Library/FHIR-ModelInfo|4.0.1 Canonical URL: `http://hl7.org/fhir/uv/cql/Library/FHIR-ModelInfo|4.0.1`
Dependency | Description: Library FHIRHelpers Resource: http://hl7.org/fhir/uv/cql/Library/FHIRHelpers|4.0.1 Canonical URL: `http://hl7.org/fhir/uv/cql/Library/FHIRHelpers|4.0.1`
Data Requirements
Data Requirement | Type: Encounter Profile(s): Encounter Must Support Elements: status, period
Parameters
Name | Use | Card. | Type | Documentation
Measurement Period | In | 0..1 | Period |
Denominator Boolean | Out | 0..1 | boolean |
Numerator Exclusion Boolean | Out | 0..1 | boolean |
Initial Population Boolean | Out | 0..1 | boolean |
Numerator Boolean | Out | 0..1 | boolean |
Denominator Exclusion Boolean | Out | 0..1 | boolean |
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