Quality Measure Implementation Guide
5.0.0 - STU5 United States of America flag

This page is part of the Quality Measure STU2 for FHIR R4 Implementation Guide (v5.0.0: STU5 (v5.0.0)) based on FHIR (HL7® FHIR® Standard) 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

Measure: EXM55 - Median Emergency Department Visit Duration (Experimental)

Official URL: http://hl7.org/fhir/us/cqfmeasures/Measure/EXM55-FHIR Version: 5.0.0
Active as of 2022-02-22 Computable Name: EXM55
Other Identifiers: http://example.org/fhir/cqi/ecqm/Measure/Identifier/exm#55 (use: official, )

Usage:Venue: EH

This example illustrates a continuous variable measure represented as a FHIR eCQM

Title: EXM55 - Median Emergency Department Visit Duration
Id: EXM55-FHIR
Version: 5.0.0
Url: EXM55 - Median Emergency Department Visit Duration
Official

55

Effective Period: 2018-01-01..2018-12-31
Experimental: true
Publisher: HL7 International / Clinical Quality Information
Description:

This example illustrates a continuous variable measure represented as a FHIR eCQM
Use Context:
code value
venue
Jurisdiction: US
Topic: 57024-2
Basis: Encounter
Scoring:

Continuous Variable

Type:

process

Improvement Notation:

Decreased score indicates improvement

Libraries:
EXM55 - Median Emergency Department Visit Duration Library (Example Continuous Variable Measure Library)
Terminology and Other Dependencies:
  • http://fhir.org/guides/cqf/common/Library/FHIRHelpers|4.0.1
  • Diagnosis Role
  • http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.117.1.7.1.299
  • http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.117.1.7.1.292
  • http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1111.126
    		•
    Parameters:
    name use min max type
    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:
    Resource Type Resource Elements Valueset Name Valueset
    Encounter(Encounter) period hospitalization hospitalization.admitSource type status Emergency Department Visit http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.117.1.7.1.292
    Encounter(Encounter) period
    Condition(Condition) id
    Direct Reference Codes:
    display code system
    Billing billing http://terminology.hl7.org/CodeSystem/diagnosis-role
    Logic Definitions:
    Group Scoring Population Criteria Expression
    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
    Stratification 1 
    define "Stratification 1" :
  "Inpatient Encounter" Encounter
    where not (PrincipalDiagnosis(Encounter).code in "Psychiatric/Mental Health Patient")
    Stratification 2 
    define "Stratification 2" :
  "Inpatient Encounter" Encounter
    where PrincipalDiagnosis(Encounter).code in "Psychiatric/Mental Health Patient"
    Stratification 3 
    define "Stratification 3" :
  "Inpatient Encounter" Encounter
    where PrincipalDiagnosis(Encounter) is null
    Library Name Name
    EXM55-FHIR Inpatient Encounter 
    define "Inpatient Encounter" :
  ["Encounter"] Encounter
    where LengthInDays(Encounter.period) <= 120
      and Encounter.period ends during "Measurement Period"
    Library Name Name
    EXM55-FHIR Stratification 3 
    define "Stratification 3" :
  "Inpatient Encounter" Encounter
    where PrincipalDiagnosis(Encounter) is null
    Library Name Name
    EXM55-FHIR Stratification 2 
    define "Stratification 2" :
  "Inpatient Encounter" Encounter
    where PrincipalDiagnosis(Encounter).code in "Psychiatric/Mental Health Patient"
    Library Name Name
    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 Name Name
    EXM55-FHIR Stratification 1 
    define "Stratification 1" :
  "Inpatient Encounter" Encounter
    where not (PrincipalDiagnosis(Encounter).code in "Psychiatric/Mental Health Patient")
    Library Name Name
    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 Name Name
    EXM55-FHIR Measure Population 
    define "Measure Population" :
  "Initial Population"