{
  "resourceType": "StructureDefinition",
  "id": "ext-patientbirthsex",
  "url": "http://hl7.org/fhir/ca/baseline/StructureDefinition/ext-patientbirthsex",
  "version": "0.1.0",
  "name": "ExtensionBirthSex",
  "title": "Extension: Birth Sex",
  "status": "draft",
  "date": "2019-12-10",
  "publisher": "HL7 Canada",
  "description": "A code classifying the person's sex assigned at birth. Replicates the birthsex extension in US-Core-R4 for interoperability.",
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "Patient"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "definition": "A code classifying the person's sex assigned at birth. Replicates the birthsex extension in US-Core-R4 for interoperability.",
        "comment": "The codes required are intended to present birth sex (i.e., the sex recorded on the patient’s birth certificate) and not gender identity or reassigned sex.",
        "max": "1",
        "isModifier": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "player[classCode=PSN|ANM and determinerCode=INSTANCE]/administrativeGender"
          },
          {
            "identity": "iso11179",
            "map": ".patient.administrativeGenderCode"
          }
        ]
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://hl7.org/fhir/ca/baseline/StructureDefinition/ext-patientbirthsex",
        "mustSupport": true
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "slicing": {
          "discriminator": [
            {
              "type": "type",
              "path": "$this"
            }
          ],
          "rules": "closed"
        },
        "type": [
          {
            "code": "Coding"
          }
        ]
      },
      {
        "id": "Extension.value[x]:valueCoding",
        "path": "Extension.value[x]",
        "sliceName": "valueCoding",
        "min": 1,
        "type": [
          {
            "code": "Coding"
          }
        ],
        "mustSupport": true,
        "binding": {
          "strength": "example",
          "description": "Code for sex assigned at birth",
          "valueSet": "http://hl7.org/fhir/ca/baseline/ValueSet/birthsex"
        }
      },
      {
        "id": "Extension.value[x]:valueCoding.system",
        "path": "Extension.value[x].system",
        "min": 1
      },
      {
        "id": "Extension.value[x]:valueCoding.code",
        "path": "Extension.value[x].code",
        "min": 1
      },
      {
        "id": "Extension.value[x]:valueCoding.display",
        "path": "Extension.value[x].display",
        "short": "Optional description of the sex at birth code",
        "definition": "Plain text representation of the sex at birth concept"
      }
    ]
  }
}