define "Initial Population":
  AgeInYearsAt(date from 
    end of "Measurement Period"
  ) in Interval[18, 75]

define "Denominator":
  "Initial Population"

define "Denominator Exclusions":
  "Initial Population"

define "Numerator":
  "Initial Population"

define "Numerator Exclusion":
  "Initial Population"

define "Denominator Exception":
  "Initial Population"

define "Patient Age Less than 18 Years Start of Measurement Period":
  AgeInYearsAt(date from start of "Measurement Period") < 18

define "Patient Age 18 Years or Older at Start of Measurement Period":
  AgeInYearsAt(date from start of "Measurement Period") >= 18

define "Initial Population2":
  AgeInYearsAt(date from 
    end of "Measurement Period"
  ) in Interval[19, 76]

define "Denominator2":
  "Initial Population2"

define "Denominator Exclusions2":
  "Initial Population2"

define "Numerator2":
  "Initial Population2"

define "Numerator Exclusion2":
  "Initial Population2"

define "Denominator Exception2":
  "Initial Population2"

define "Patient Age Less than 18 Years Start of Measurement Period":
  AgeInYearsAt(date from start of "Measurement Period") < 18

define "Patient Age 18 Years or Older at Start of Measurement Period":
  AgeInYearsAt(date from start of "Measurement Period") >= 18

define "SDE Race":
  Patient.race R
    return Tuple {
      codes: R.ombCategory union R.detailed,
      display: R.text
    }

define "SDE Sex":
  case
    when Patient.sex = '184115007' then "Patient sex unknown"
    when Patient.sex = '248152002' then "Female"
    when Patient.sex = '248153007' then "Male"
    when Patient.sex = 'asked-declined' then "Asked But Declined"
    when Patient.gender = 'male' then "M"
    when Patient.gender = 'female' then "F"
    else null
  end

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

define "SDE Ethnicity":
  Patient.ethnicity E
    return Tuple {
      codes: { E.ombCategory } union E.detailed,
      display: E.text
    }

define "RAV Patient Too Old at Start of Measurement Period":
  AgeInYearsAt(date from start of "Measurement Period") > 80

define "RAV Patient Too Young at Start of Measurement Period":
  AgeInYearsAt(date from start of "Measurement Period") < 5

define "Initial Population":
  AgeInYearsAt(date from 
    end of "Measurement Period"
  ) in Interval[18, 75]

define "Denominator Exception":
  "Initial Population"

define "Initial Population2":
  AgeInYearsAt(date from 
    end of "Measurement Period"
  ) in Interval[19, 76]

define "Denominator Exclusions2":
  "Initial Population2"

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

define "Numerator Exclusion":
  "Initial Population"

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

define "Numerator":
  "Initial Population"

define "Numerator Exclusion2":
  "Initial Population2"

define "Patient Age Less than 18 Years Start of Measurement Period":
  AgeInYearsAt(date from start of "Measurement Period") < 18

define "Denominator":
  "Initial Population"

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

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

define "Denominator2":
  "Initial Population2"

define "Denominator Exclusions":
  "Initial Population"

define "Patient Age 18 Years or Older at Start of Measurement Period":
  AgeInYearsAt(date from start of "Measurement Period") >= 18

define "Numerator2":
  "Initial Population2"

define "Denominator Exception2":
  "Initial Population2"

define function ToString(value uri): value.value

/*
@description: Converts the given FHIR [Coding](https://hl7.org/fhir/datatypes.html#Coding) value to a CQL Code.
*/
define function ToCode(coding FHIR.Coding):
    if coding is null then
        null
    else
        System.Code {
          code: coding.code.value,
          system: coding.system.value,
          version: coding.version.value,
          display: coding.display.value
        }

/*
@description: Converts the given [Period](https://hl7.org/fhir/datatypes.html#Period)
value to a CQL DateTime Interval
@comment: If the start value of the given period is unspecified, the starting
boundary of the resulting interval will be open (meaning the start of the interval
is unknown, as opposed to interpreted as the beginning of time).
*/
define function ToInterval(period FHIR.Period):
    if period is null then
        null
    else
        if period."start" is null then
            Interval(period."start".value, period."end".value]
        else
            Interval[period."start".value, period."end".value]