AdultOutpatientEncountersFHIR4.cql

library AdultOutpatientEncountersFHIR4 version '2.2.000'

using FHIR version '4.0.1'

include FHIRHelpers version '4.0.001' called FHIRHelpers
include MATGlobalCommonFunctionsFHIR4 version '6.1.000' called Global

valueset "Annual Wellness Visit": 'http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.526.3.1240' 
valueset "Home Healthcare Services": 'http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.464.1003.101.12.1016' 
valueset "Office Visit": 'http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.464.1003.101.12.1001' 
valueset "Preventive Care Services - Established Office Visit, 18 and Up": 'http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.464.1003.101.12.1025' 
valueset "Preventive Care Services-Initial Office Visit, 18 and Up": 'http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.3.464.1003.101.12.1023' 

parameter "Measurement Period" Interval<DateTime>

context Patient

define "Qualifying Encounters":
  (
                    [Encounter: "Office Visit"]
                  		union [Encounter: "Annual Wellness Visit"]
                  		union [Encounter: "Preventive Care Services - Established Office Visit, 18 and Up"]
                  		union [Encounter: "Preventive Care Services-Initial Office Visit, 18 and Up"]
                  		union [Encounter: "Home Healthcare Services"]
                  ) ValidEncounter
                		where ValidEncounter.status  = 'finished'
                		and Global."Normalize Interval"(ValidEncounter.period) during "Measurement Period"