define "SDE Sex":
  case
      when Patient.gender = 'male' then Code { code: 'M', system: 'http://hl7.org/fhir/v3/AdministrativeGender', display: 'Male' }
      when Patient.gender = 'female' then Code { code: 'F', system: 'http://hl7.org/fhir/v3/AdministrativeGender', display: 'Female' }
      else null
    end

define "SDE Sex":
  SDE."SDE Sex"

define "Colonoscopy Performed":
	[Procedure: "Colonoscopy"] Colonoscopy
		where Colonoscopy.status = 'completed'
		  and Global."Normalize Interval"(Colonoscopy.performed) ends 10 years or less on or before end of "Measurement Period"

define "Fecal Occult Blood Test Performed":
	[Observation: "Fecal Occult Blood Test (FOBT)"] FecalOccultResult
		where FecalOccultResult.status in {'final', 'amended', 'corrected', 'preliminary'}
			and FecalOccultResult.value is not null
			and Global."Normalize Interval"(FecalOccultResult.effective) during day of "Measurement Period"

define "Flexible Sigmoidoscopy Performed":
	[Procedure: "Flexible Sigmoidoscopy"] FlexibleSigmoidoscopy
		where FlexibleSigmoidoscopy.status = 'completed'
			and Global."Normalize Interval"(FlexibleSigmoidoscopy.performed) ends 5 years or less on or before end of "Measurement Period"

define "Fecal Immunochemical Test DNA":
	[Observation: "FIT DNA"] FitDNA
		where FitDNA.status in {'final', 'amended', 'corrected', 'preliminary'}
			and FitDNA.value is not null
			and Global."Normalize Interval"(FitDNA.effective) occurs 3 years or less on or before day of end of "Measurement Period"

define "CT Colonography Performed":
	[Procedure: "CT Colonography"] Colonography
		where Colonography.status = 'completed'
			and Global."Normalize Interval"(Colonography.performed) ends 5 years or less on or before end of "Measurement Period"

define "Numerator":
	exists "Colonoscopy Performed"
		or exists "Fecal Occult Blood Test Performed"
		or exists "Flexible Sigmoidoscopy Performed"
		or exists "Fecal Immunochemical Test DNA"
		or exists "CT Colonography Performed"

define "Denominator":
	true

define "SDE Payer":
  [Coverage: type in "Payer"] Payer
        return {
          code: Payer.type,
          period: Payer.period
        }

define "SDE Payer":
  SDE."SDE Payer"

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.period during "Measurement Period"
  		and ValidEncounter.status  = 'finished'

define "Initial Population":
	Global."CalendarAgeInYearsAt"(FHIRHelpers.ToDate(Patient.birthDate), start of "Measurement Period") in Interval[50, 75]
			and exists AdultOutpatientEncounters."Qualifying Encounters"

define "SDE Ethnicity":
  (flatten (
      Patient.extension Extension
        where Extension.url = 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-ethnicity'
          return Extension.extension
    )) E
      where E.url = 'ombCategory'
        or E.url = 'detailed'
      return E.value as Coding

define "SDE Ethnicity":
  SDE."SDE Ethnicity"

define "Has Hospice":
	exists (
    [Encounter: "Encounter Inpatient"] DischargeHospice
			where DischargeHospice.status = 'finished'
		    and (
	        DischargeHospice.hospitalization.dischargeDisposition ~ "Discharge to home for hospice care (procedure)"
				    or DischargeHospice.hospitalization.dischargeDisposition ~ "Discharge to healthcare facility for hospice care (procedure)"
	    	)
				and DischargeHospice.period ends during "Measurement Period"
	)
    or exists (
      [ServiceRequest: "Hospice care ambulatory"] HospiceOrder
        where HospiceOrder.intent = 'order'
            and HospiceOrder.authoredOn in "Measurement Period"
    )
    or exists (
      [Procedure: "Hospice care ambulatory"] HospicePerformed
        where HospicePerformed.status = 'completed'
          and Global."Normalize Interval"(HospicePerformed.performed) overlaps "Measurement Period"
    )

define "Malignant Neoplasm Ever":
	[Condition: "Malignant Neoplasm of Colon"] ColorectalCancer
		where Global."Normalize Interval"(ColorectalCancer.onset) starts on or before end of "Measurement Period"

define "Total Colectomy Performed":
	[Procedure: "Total Colectomy"] Colectomy
		where Colectomy.status = 'completed'
			and Global."Normalize Interval"(Colectomy.performed) starts on or before end of "Measurement Period"

define "Denominator Exclusion":
	Hospice."Has Hospice"
		or exists "Malignant Neoplasm Ever"
		or exists "Total Colectomy Performed"

define "SDE Race":
  (flatten (
      Patient.extension Extension
        where Extension.url = 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-race'
          return Extension.extension
    )) E
      where E.url = 'ombCategory'
        or E.url = 'detailed'
      return E.value as Coding

define "SDE Race":
  SDE."SDE Race"