Chronic Disease Surveillance
0.1.0 - CI Build International flag

Chronic Disease Surveillance, published by Clinical Quality Framework. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/cqframework/aphl-chronic-ig/ and changes regularly. See the Directory of published versions

Library: SeenPatientsTrigger

Official URL: http://fhir.org/guides/cqf/aphl/chronic-ds/Library/SeenPatientsTrigger Version: 0.1.0
Draft as of 2025-09-25 Computable Name: SeenPatientsTrigger
Metadata
Version 0.1.0
Status Draft
Jurisdiction 001 from http://unstats.un.org/unsd/methods/m49/m49.htm
Steward (Publisher) Clinical Quality Framework
Type logic-library from http://terminology.hl7.org/CodeSystem/library-type
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
Parameter Name: encounter-end
Use: Out
Min Cardinality: 0
Max Cardinality: 1
Type: boolean
Data Requirement Type: Patient
Profile(s): Patient
Data Requirement Type: Encounter
Profile(s): Encounter
Library Content
CQL Content 
library SeenPatientsTrigger version '0.1.0'

using FHIR version '4.0.1'

include FHIRHelpers version '4.1.000'

parameter "Measurement Period" default Interval[@2025-01-01T00:00:00.0, @2026-01-01T00:00:00.0)

context Patient

define "encounter-end":
  exists([Encounter])
ELM XML Content 
Encoded data (7140 characters)
ELM JSON Content 
Encoded data (13480 characters)
Generated using version 0.5.1-cibuild of the sample-content-ig Liquid templates