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