Example of a clinical gender observation. For a discussion on representing a patient's gender the Patient Resource.

{
  "resourceType": "Observation",
  "id": "clinical-gender",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative with Details</b></p><p><b>id</b>: clinical-gender</p><p><b>status</b>: final</p><p><b>category</b>: Social History <span>(Details : {http://terminology.hl7.org/CodeSystem/observation-category code 'social-history' = 'Social History', given as 'Social History'})</span></p><p><b>code</b>: Gender identity <span>(Details : {LOINC code '76691-5' = 'Gender identity', given as 'Gender identity'})</span></p><p><b>subject</b>: <a>Patient/example</a></p><p><b>encounter</b>: <a>Encounter/example</a></p><p><b>effective</b>: 01/02/2018</p><p><b>performer</b>: <a>Encounter/example</a></p><p><b>value</b>: Feminism in boy <span>(Details : {SNOMED CT code '191788006' = 'Feminism in boy', given as 'Feminism in boy (finding)'})</span></p></div>"
  },
  "status": "final",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/observation-category",
          "code": "social-history",
          "display": "Social History"
        }
      ]
    }
  ],
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "76691-5",
        "display": "Gender identity"
      }
    ],
    "text": "Gender identity"

  "resourceType" : "Observation",
  "id" : "clinical-gender",
  "status" : "final",
  "category" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
      "code" : "social-history",
      "display" : "Social History"
    }]
  }],
  "code" : {
    "coding" : [{
      "system" : "http://loinc.org",
      "code" : "76691-5",
      "display" : "Gender identity"
    }],
    "text" : "Gender identity"

  },
  "subject": {
    "reference": "Patient/example"

  "subject" : {
    "reference" : "Patient/example"

  },
  "encounter": {
    "reference": "Encounter/example"

  "encounter" : {
    "reference" : "Encounter/example"

  },
  "effectiveDateTime": "2018-02-01",
  "performer": [
    {
      "reference": "Encounter/example"
    }
  ],
  "valueCodeableConcept": {
    "coding": [
      {
        "system": "http://snomed.info/sct",
        "code": "191788006",
        "display": "Feminism in boy (finding)"
      }
    ],
    "text": "Feminism in boy"

  "effectiveDateTime" : "2018-02-01",
  "performer" : [{
    "reference" : "Practitioner/example"
  }],
  "valueCodeableConcept" : {
    "coding" : [{
      "system" : "http://snomed.info/sct",
      "code" : "191788006",
      "display" : "Feminism in boy (finding)"
    }],
    "text" : "Feminism in boy"

  }
}