description: The obstetric estimate of the infant’s gestation in completed weeks based on the birth/delivery attendant’s final estimate of gestation which should be \ndetermined by all perinatal factors and assessments such as ultrasound, but not the neonatal exam.  For submission to NCHS, values in days will be divided by 7 without remainder, and values\nin weeks will be rounded down to an integer.
package_name: hl7.fhir.us.bfdr.r4b
derivation: constraint
name: ObservationGestationalAgeAtDelivery
type: Observation
elements:
  code:
    short: Gestational age Estimated
    pattern:
      type: CodeableConcept
      value:
        coding:
        - {code: 11884-4, system: 'http://loinc.org'}
    index: 0
  subject:
    type: Reference
    refers: ['http://hl7.org/fhir/us/bfdr/StructureDefinition/Patient-decedent-fetus', 'http://hl7.org/fhir/us/vr-common-library/StructureDefinition/Patient-child-vr']
    index: 1
  value:
    extensions: {}
    elements:
      extension:
        elements:
          value:
            short: To reflect the relevant edit possibilities for estimate of gestation.
            choices: []
            index: 7
  valueQuantity: {type: Quantity, short: Age in weeks or days, choiceOf: value, index: 4}
  value[x]:
    elements:
      value: {index: 8}
      code:
        binding: {strength: required, valueSet: 'http://hl7.org/fhir/us/bfdr/ValueSet/ValueSet-units-of-gestational-age'}
        index: 9
    required: [value]
package_version: 2.0.0
class: profile
kind: resource
url: http://hl7.org/fhir/us/bfdr/StructureDefinition/Observation-gestational-age-at-delivery
base: http://hl7.org/fhir/StructureDefinition/Observation
version: 2.0.0
required: [value, subject, valueQuantity]