Quality Measure Implementation Guide (STU4)
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This page is part of the Quality Measure STU2 for FHIR R4 Implementation Guide (v4.0.0: STU4 (v4.0.0)) based on FHIR R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

Example Measure: EXM55 - Median Emergency Department Visit Duration

Active as of 2022-02-22
Id: EXM55-FHIR
Download cql: EXM55-FHIR.cql
Url: EXM55 - Median Emergency Department Visit Duration
Version: 5.0.0
Identifier:

value: 55

Name: EXM55
Title: EXM55 - Median Emergency Department Visit Duration
Status: active
Experimental: true
Scoring:

Continuous Variable

Improvement Notation:

Decreased score indicates improvement

Type:

process

Date: 2022-02-22
Publisher: Clinical Quality Information WG
Description:

This example illustrates a continuous variable measure represented as a FHIR eCQM
Use Context:
codevalue
program
Jurisdiction: US
Topic: 57024-2
Approval Date: 2019-03-08
Last Review Date: 2019-03-08
Effective Period: 2018-01-01..2018-12-31
Libraries:
EXM55 - Median Emergency Department Visit Duration (Example Continuous Variable Measure Library)
Related Artifact Dependencies:
  • http://fhir.org/guides/cqf/common/Library/FHIRHelpers|4.0.1
  • Diagnosis Role
  • Psychiatric/Mental Health Diagnosis
  • Emergency Department Visit
  • Hospital Settings
    		•
    Parameters:
    nameuseminmaxtype
    Measurement Period in 0 1 Period
    Stratification 3 out 0 * Encounter
    Stratification 2 out 0 * Encounter
    Measure Population Exclusion out 0 * Encounter
    Stratification 1 out 0 * Encounter
    Initial Population out 0 * Encounter
    Measure Population out 0 * Encounter
    DataRequirements:
    TypeMust SupportValueset NameValueset
    Encounter period hospitalization hospitalization.admitSource type status Emergency Department Visit Emergency Department Visit
    Encounter period
    Condition id
    Direct Reference Codes:
    displaycodesystem
    Billing billing Diagnosis Role
    Logic Definitions:
    GroupScoringPopulation CriteriaExpression
    Measure scoring:

    Continuous Variable

    Initial Population 
    define "Initial Population" :
  "Inpatient Encounter" Encounter
    with ["Encounter" : "Emergency Department Visit"] ED
     such that ED.status = 'finished'
       and ED.period ends 1 hour or less before start of Encounter.period
    Measure Population 
    define "Measure Population" :
  "Initial Population"
    Measure Population Exclusion 
    define "Measure Population Exclusion" :
  "Inpatient Encounter" Encounter
    with ["Encounter" : "Emergency Department Visit"] ED
      such that ED.period ends 1 hour or less before start of Encounter.period
        and ED.status = 'finished'
        and ED.hospitalization.admitSource in "Hospital Settings"
    Measure Observation
    Library NameName
    EXM55-FHIR Inpatient Encounter 
    define "Inpatient Encounter" :
  ["Encounter"] Encounter
    where LengthInDays(Encounter.period) <= 120
      and Encounter.period ends during "Measurement Period"
    Library NameName
    EXM55-FHIR Stratification 3 
    define "Stratification 3" :
  "Inpatient Encounter" Encounter
    where PrincipalDiagnosis(Encounter) is null
    Library NameName
    EXM55-FHIR Stratification 2 
    define "Stratification 2" :
  "Inpatient Encounter" Encounter
    where PrincipalDiagnosis(Encounter).code in "Psychiatric/Mental Health Patient"
    Library NameName
    EXM55-FHIR Measure Population Exclusion 
    define "Measure Population Exclusion" :
  "Inpatient Encounter" Encounter
    with ["Encounter" : "Emergency Department Visit"] ED
      such that ED.period ends 1 hour or less before start of Encounter.period
        and ED.status = 'finished'
        and ED.hospitalization.admitSource in "Hospital Settings"
    Library NameName
    EXM55-FHIR Stratification 1 
    define "Stratification 1" :
  "Inpatient Encounter" Encounter
    where not (PrincipalDiagnosis(Encounter).code in "Psychiatric/Mental Health Patient")
    Library NameName
    EXM55-FHIR Initial Population 
    define "Initial Population" :
  "Inpatient Encounter" Encounter
    with ["Encounter" : "Emergency Department Visit"] ED
     such that ED.status = 'finished'
       and ED.period ends 1 hour or less before start of Encounter.period
    Library NameName
    EXM55-FHIR Measure Population 
    define "Measure Population" :
  "Initial Population"

    Contained resources