description: The  US Core Pregnancy Status Observation Profile inherits from the FHIR [Observation](https://hl7.org/fhir/R4/observation.html) resource; refer to it for scope and usage definitions. This profile meets the requirements of the U.S. Core Data for Interoperability (USCDI)  *Pregnancy Status* Data Element. It sets minimum expectations for the  Observation resource to record, search, and fetch the patient's state or condition of being pregnant. It specifies which core elements, extensions,  vocabularies, and value sets **SHALL** be present in the resource and constrains how the elements are used. Providing the floor for standards development for specific use cases promotes interoperability and adoption.
package_name: hl7.fhir.us.core
derivation: constraint
name: USCoreObservationPregnancyStatusProfile
type: Observation
elements:
  status: {mustSupport: true, index: 0}
  category:
    mustSupport: true
    index: 1
    slicing:
      rules: open
      discriminator:
      - {path: $this, type: pattern}
      min: null
      slices:
        SocialHistory:
          match:
            coding:
            - {code: social-history, system: 'http://terminology.hl7.org/CodeSystem/observation-category'}
          schema:
            mustSupport: true
            pattern:
              type: CodeableConcept
              value:
                coding:
                - {code: social-history, system: 'http://terminology.hl7.org/CodeSystem/observation-category'}
            index: 2
          min: 0
          max: 1
  code:
    short: Pregnancy Status
    mustSupport: true
    pattern:
      type: CodeableConcept
      value:
        coding:
        - {code: 82810-3, system: 'http://loinc.org'}
    index: 3
  subject:
    type: Reference
    mustSupport: true
    refers: ['http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient']
    index: 4
  effectiveDateTime: {mustSupport: true, index: 5}
  valueCodeableConcept:
    type: CodeableConcept
    short: Coded Responses from Pregnancy Status Value Set
    binding: {strength: preferred, valueSet: 'http://hl7.org/fhir/us/core/ValueSet/us-core-pregnancy-status'}
    mustSupport: true
    index: 6
package_version: 7.0.0
class: profile
kind: resource
url: http://hl7.org/fhir/us/core/StructureDefinition/us-core-observation-pregnancystatus
base: http://hl7.org/fhir/StructureDefinition/Observation
version: 7.0.0
required: [effectiveDateTime, subject, valueCodeableConcept]