define "Initial Population" :   "Inpatient Encounter" Encounter

define "Measure Population" :   "Initial Population"

define function "Measure Observation" (Encounter "Encounter" ) :   duration in minutes of "Related ED Visit"(Encounter).period

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

define "Inpatient Encounter" :   ["Encounter"] Encounter     where LengthInDays(Encounter.period) <= 120       and Encounter.period ends during "Measurement Period"

define "Initial Population" :   "Inpatient Encounter" Encounter

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 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 "Measure Population" :   "Initial Population"

define function "LengthInDays"(Value Interval<DateTime>):  difference in days between start of Value and end of Value

define function "Measure Observation" (Encounter "Encounter" ) :   duration in minutes of "Related ED Visit"(Encounter).period

//Measure Observation define function "Related ED Visit" (Encounter "Encounter" ) :   Last(["Encounter" : "Emergency Department Visit"] ED     where ED.status = 'finished'       and ED.period ends 1 hour or less before start of Encounter.period     sort by start of period )

define function ToString(value AdministrativeGender): value.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]

define function ToString(value uri): value.value

define function ToString(value EncounterStatus): value.value