Quality Measure Implementation Guide
2.0.0 - STU 2 International flag

Quality Measure Implementation Guide, published by HL7 International / Clinical Quality Information. This guide is not an authorized publication; it is the continuous build for version 2.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-cqm/ and changes regularly. 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
Standards status: Informative 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
Identifier urn:oid:2.16.840.1.113883.4.642.40.61.29.28
Status Draft
Experimental true
Jurisdiction http://unstats.un.org/unsd/methods/m49/m49.htm#001
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 http://terminology.hl7.org/CodeSystem/measure-scoring#ratio
Contents Metadata
Contents
Measure Rates (Groups)
Supplemental Data
Measure Logic
Population Criteria
Logic Definitions
Terminology
Dependencies
Data Requirements
Measure Rates (Groups)
Measure Rate (Group) (ID: group-1)
Basis boolean
Initial Population ID: initial-population
Criteria: Initial Population Boolean
Denominator ID: denominator
Criteria: Denominator Boolean
Denominator Exclusion ID: denominator-exclusion
Criteria: Denominator Exclusion Boolean
Numerator ID: numerator
Criteria: Numerator Boolean
Numerator Exclusion ID: numerator-exclusion
Criteria: Numerator Exclusion Boolean
Supplemental Data Elements
Measure Logic
Primary Library Supporting Evidence Example
Population Criteria
Measure Rate (Group) (ID: group-1)
Initial Population 
// boolean population results
// has matching encounter

define "Initial Population Boolean":
  exists "All Encounters"
Definition
Denominator 
define "Denominator Boolean":
    "Initial Population Boolean"
Definition
Denominator Exclusion 
define "Denominator Exclusion Boolean":
  exists "Encounter Cancelled"
Definition
Numerator 
define "Numerator Boolean":
  exists "Encounters in Period"
Definition
Numerator Exclusion 
define "Numerator Exclusion Boolean":
  exists "Encounter Arrived"
Definition
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
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