description: This profile represents the date of the last menstrual period of the patient. The first day of last menstrual period should be captured. The effectiveTime captures the observation date. Migrated from VRCL.
package_name: hl7.fhir.us.bfdr
derivation: constraint
name: ObservationLastMenstrualPeriod
type: Observation
elements:
  code:
    short: Last menstrual period start date
    mustSupport: true
    pattern:
      type: CodeableConcept
      value:
        coding:
        - {code: 8665-2, system: 'http://loinc.org'}
    index: 0
  subject:
    type: Reference
    mustSupport: true
    refers: ['http://hl7.org/fhir/us/vr-common-library/StructureDefinition/Patient-mother-vr']
    index: 1
  effective:
    short: Observation date (date on which the observation was reported to the provider).
    mustSupport: true
    choices: [effectiveDateTime]
    index: 3
  effectiveDateTime: {type: dateTime, short: Observation date (date on which the observation was reported to the provider)., mustSupport: true, choiceOf: effective, index: 4}
  value:
    short: Start of last menstrual period
    mustSupport: true
    choices: [valueDateTime]
    index: 6
  valueDateTime: {type: dateTime, short: Start of last menstrual period, mustSupport: true, choiceOf: value, index: 7}
package_version: 2.0.0-ballot
class: profile
kind: resource
url: http://hl7.org/fhir/us/bfdr/StructureDefinition/Observation-last-menstrual-period
base: http://hl7.org/fhir/StructureDefinition/Observation
version: 2.0.0-ballot
required: [valueDateTime, value, subject]