<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="pnc-observation-profile" />
  <url value="http://example.org/fhir/StructureDefinition/pnc-observation" />
  <version value="1.0.0" />
  <name value="PNCObservationProfile" />
  <status value="draft" />
  <date value="2025-05-23" />
  <publisher value="Your Organization Name" />
  <description value="Profile of Observation resource for postnatal care (PNC) data including blood pressure and postpartum conditions." />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Observation" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" />
  <derivation value="constraint" />
  <differential>
    <element id="Observation.subject">
      <path value="Observation.subject" />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Patient" />
      </type>
    </element>
    <element id="Observation.component:systolic">
      <path value="Observation.component" />
      <sliceName value="systolic" />
      <definition>
        <code>
          <coding>
            <system value="http://loinc.org" />
            <code value="8480-6" />
            <display value="Systolic blood pressure" />
          </coding>
        </code>
        <valueQuantity>
          <unit value="mmHg" />
          <system value="http://unitsofmeasure.org" />
          <code value="mm[Hg]" />
        </valueQuantity>
      </definition>
    </element>
    <element id="Observation.component:diastolic">
      <path value="Observation.component" />
      <sliceName value="diastolic" />
      <definition>
        <code>
          <coding>
            <system value="http://loinc.org" />
            <code value="8462-4" />
            <display value="Diastolic blood pressure" />
          </coding>
        </code>
        <valueQuantity>
          <unit value="mmHg" />
          <system value="http://unitsofmeasure.org" />
          <code value="mm[Hg]" />
        </valueQuantity>
      </definition>
    </element>
    <element id="Observation.code">
      <path value="Observation.code" />
      <short value="Various PNC assessments (bleeding, mood, etc.)" />
    </element>
    <element id="Observation.valueBoolean">
      <path value="Observation.valueBoolean" />
      <short value="Boolean answers for danger signs (Yes/No)" />
    </element>
    <element id="Observation.valueCodeableConcept">
      <path value="Observation.valueCodeableConcept" />
      <binding>
        <strength value="required" />
        <valueSet>
          <valueSet value="http://example.org/fhir/ValueSet/pnc-breast-condition" />
        </valueSet>
      </binding>
    </element>
    <element id="Observation.valueString">
      <path value="Observation.valueString" />
      <short value="Text comment on cesarean wound (if applicable)" />
    </element>
  </differential>
</StructureDefinition>