Your User Friendly Name for MyIG Here
0.2.0 - CI Build International flag

Your User Friendly Name for MyIG Here, published by HL7 International - [Some] Work Group. This guide is not an authorized publication; it is the continuous build for version 0.2.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/FHIR/sample-ig/ and changes regularly. See the Directory of published versions

Library: Example CQL Library (Experimental)

Official URL: http://somewhere.org/fhir/uv/myig/Library/example Version: 0.2.0
Standards status: Informative Draft as of 2025-12-05 Computable Name: Example

Some example library

English

Title: Example CQL Library
Id: example
Version: 0.2.0
Url: Example CQL Library
Status: draft
Experimental: true
Type:

system: http://terminology.hl7.org/CodeSystem/library-type

code: logic-library

Subject:

system: http://hl7.org/fhir/resource-types

code: Patient

Date: 2025-12-05 19:07:02+0000
Publisher: HL7 International - [Some] Work Group
Description:

Some example library
Jurisdiction: 001
Related Artifacts:

Dependencies
Parameters:
NameTypeMinMaxIn/Out
Measurement PeriodPeriod01In
PatientPatient01Out
Inpatient, Emergency, or Telephone Evaluation or Management EncounterEncounter0*Out
Initial Populationboolean01Out
Denominatorboolean01Out
COVID-19 Communicable Disease ScreeningObservation0*Out
Numeratorboolean01Out
Data Requirements:
TypeProfileMSCode Filter
Encounter http://hl7.org/fhir/StructureDefinition/Encounter code filter:
path: type
value set: http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.666.5.307
Encounter http://hl7.org/fhir/StructureDefinition/Encounter code filter:
path: type
value set: http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.117.1.7.1.292
Encounter http://hl7.org/fhir/StructureDefinition/Encounter code filter:
path: type
value set: http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.464.1003.101.12.1082
Encounter http://hl7.org/fhir/StructureDefinition/Encounter code filter:
path: type
value set: http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.464.1003.101.12.1053
Observation http://hl7.org/fhir/StructureDefinition/Observation code filter:
path: code
value set: TBD
Content: text/cql
library example version '1.0.0'

using FHIR version '4.0.1'

include fhir.cqf.common.FHIRHelpers version '4.0.1'

codesystem "Observation Category Codes": 'http://terminology.hl7.org/CodeSystem/observation-category'

valueset "Encounter Inpatient": 'http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.666.5.307'
valueset "Emergency Department Visit": 'http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.117.1.7.1.292'
valueset "Telephone Evaluation": 'http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.464.1003.101.12.1082'
valueset "Telephone Management": 'http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.464.1003.101.12.1053'

valueset "COVID-19 Screening Result": 'TBD'

code "Laboratory Observation Category": 'laboratory' from "Observation Category Codes"

parameter "Measurement Period" Interval<DateTime>

context Patient

define "Inpatient, Emergency, or Telephone Evaluation or Management Encounter":
  (
    [Encounter: "Encounter Inpatient"]
      union [Encounter: "Emergency Department Visit"]
      union [Encounter: "Telephone Evaluation"]
      union [Encounter: "Telephone Management"]
  ) Encounter
    where Encounter.status = 'finished'
      and Encounter.period during "Measurement Period"

define "Initial Population":
  exists ("Inpatient, Emergency, or Telephone Evaluation or Management Encounter")

define "Denominator":
  true

define "COVID-19 Communicable Disease Screening":
  [Observation: "COVID-19 Screening Result"] Result
    where exists (Result.category C where C ~ "Laboratory Observation Category")
      and Result.status in { 'final', 'amended', 'corrected' }
      and Result.effective during "Measurement Period"

define "Numerator":
  exists ("COVID-19 Communicable Disease Screening")
Content: application/elm+xml
Encoded data (37428 characters)
Content: application/elm+json
Encoded data (66428 characters)