Quality Measure Implementation Guide
1.0.0 - STU 1 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 1.0.0 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

Library: VTE ICU Library (Experimental)

Official URL: http://hl7.org/fhir/uv/cqm/Library/VTEICU Version: 5.0.000
Standards status: Informative Computable Name: VTEICU
Other Identifiers: http://example.org/fhir/cqi/ecqm/Library/Identifier#VTEICU (use: official, ), OID:2.16.840.1.113883.4.642.40.61.28.36

This library is used as an example in the FHIR Quality Measure Implementation Guide

Metadata
Title VTE ICU Library
Version 5.0.000
Identifier VTEICU
Identifier urn:oid:2.16.840.1.113883.4.642.40.61.28.36
Approval Date 2019-08-03
Last Review Date 2019-08-03
Experimental true
Jurisdiction Global (Whole world)
Steward (Publisher) HL7 International / Clinical Quality Information
Description

This library is used as an example in the FHIR Quality Measure Implementation Guide
Type Logic Library
Parameter Name: Measurement Period
Use: In
Min Cardinality: 0
Max Cardinality: 1
Type: Period
Parameter Name: Patient
Use: Out
Min Cardinality: 0
Max Cardinality: 1
Type: Patient
Data Requirement Type: Patient
Profile(s): Patient
Library Content
CQL Content 
/*
This example is a work in progress and should not be considered a final specification
or recommendation for guidance. This example will help guide and direct the process
of finding conventions and usage patterns that meet the needs of the various stakeholders
in the measure development community.
*/
library VTEICU version '5.0.000'

using FHIR version '4.0.1'

include hl7.fhir.uv.cql.FHIRHelpers version '4.0.1' called FHIRHelpers

include MATGlobalCommonFunctions version '5.0.000' called Global

valueset "Intensive Care Unit": 'http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1110.23'

parameter "Measurement Period" Interval<DateTime>
  default Interval[@2019-01-01T00:00:00.0, @2020-01-01T00:00:00.0)

context Patient

define function "FromDayOfStartOfHospitalizationToDayAfterAdmission"(Encounter FHIR.Encounter ):
	Interval[Global."ToDate"(start of Global."HospitalizationWithObservation"(Encounter)), Global."ToDate"(start of Encounter.period + 2 days))

define function "StartOfFirstICU"(Encounter FHIR.Encounter ):
	start of "FirstICULocationPeriod"(Encounter)

define function "FromDayOfStartOfHospitalizationToDayAfterFirstICU"(Encounter FHIR.Encounter ):
	Interval[Global."ToDate"(start of Global."HospitalizationWithObservation"(Encounter)), Global."ToDate"(StartOfFirstICU(Encounter)+ 2 days))

define function "FirstICULocationPeriod"(Encounter FHIR.Encounter ):
	"FirstInpatientIntensiveCareUnit"(Encounter).period

define function "FirstInpatientIntensiveCareUnit"(Encounter FHIR.Encounter ):
	First((Encounter.location)HospitalLocation
			where Global.GetLocation(HospitalLocation.location).type in "Intensive Care Unit"
				and HospitalLocation.period during Encounter.period
			sort by start of period
	)
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