{
  "resourceType": "CodeSystem",
  "id": "history-absent-reason",
  "meta": {
    "lastUpdated": "2019-11-01T09:29:23.356+11:00"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "pc"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
      "valueCode": "draft"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 1
    }
  ],
  "url": "http://terminology.hl7.org/CodeSystem/history-absent-reason",
  "identifier": [
    {
      "system": "urn:ietf:rfc:3986",
      "value": "urn:oid:2.16.840.1.113883.4.642.4.1094"
    }
  ],
  "version": "4.0.1",
  "name": "FamilyHistoryAbsentReason",
  "title": "FamilyHistoryAbsentReason",
  "status": "draft",
  "experimental": false,
  "date": "2019-11-01T09:29:23+11:00",
  "publisher": "HL7 (FHIR Project)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/fhir"
        },
        {
          "system": "email",
          "value": "fhir@lists.hl7.org"
        }
      ]
    }
  ],
  "description": "Codes describing the reason why a family member's history is not available.",
  "caseSensitive": true,
  "valueSet": "http://hl7.org/fhir/ValueSet/history-absent-reason",
  "content": "complete",
  "concept": [
    {
      "code": "subject-unknown",
      "display": "Subject Unknown",
      "definition": "Patient does not know the subject, e.g. the biological parent of an adopted patient."
    },
    {
      "code": "withheld",
      "display": "Information Withheld",
      "definition": "The patient withheld or refused to share the information."
    },
    {
      "code": "unable-to-obtain",
      "display": "Unable To Obtain",
      "definition": "Information cannot be obtained; e.g. unconscious patient."
    },
    {
      "code": "deferred",
      "display": "Deferred",
      "definition": "Patient does not have the information now, but can provide the information at a later date."
    }
  ]
}