http://terminology.hl7.org/CodeSystem/communication-not-done-reason|4.0.1

{
  "description" : "Codes for the reason why a communication did not happen.",
  "compose" : null,
  "package" : "hl7.fhir.r4.core@4.0.1",
  "date" : "2019-10-31T22:29:23Z",
  "meta" : {
    "lastUpdated" : "2019-11-01T09:29:23.356+11:00"
  },
  "publisher" : "HL7 (FHIR Project)",
  "content" : "complete",
  "name" : "CommunicationNotDoneReason",
  "experimental" : false,
  "resourceType" : "CodeSystem",
  "title" : "CommunicationNotDoneReason",
  "supliment" : null,
  "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
  } ],
  "status" : "draft",
  "id" : "d59eb350-698d-56d0-9757-20165e672d2a",
  "valueSet" : "http://hl7.org/fhir/ValueSet/communication-not-done-reason",
  "url" : "http://terminology.hl7.org/CodeSystem/communication-not-done-reason",
  "identifier" : [ {
    "value" : "urn:oid:2.16.840.1.113883.4.642.4.1077",
    "system" : "urn:ietf:rfc:3986"
  } ],
  "concept" : [ {
    "code" : "unknown",
    "display" : "Unknown",
    "definition" : "The communication was not done due to an unknown reason."
  }, {
    "code" : "system-error",
    "display" : "System Error",
    "definition" : "The communication was not done due to a system error."
  }, {
    "code" : "invalid-phone-number",
    "display" : "Invalid Phone Number",
    "definition" : "The communication was not done due to an invalid phone number."
  }, {
    "code" : "recipient-unavailable",
    "display" : "Recipient Unavailable",
    "definition" : "The communication was not done due to the recipient being unavailable."
  }, {
    "code" : "family-objection",
    "display" : "Family Objection",
    "definition" : "The communication was not done due to a family objection."
  }, {
    "code" : "patient-objection",
    "display" : "Patient Objection",
    "definition" : "The communication was not done due to a patient objection."
  } ],
  "caseSensitive" : true,
  "version" : "4.0.1",
  "contact" : [ {
    "telecom" : [ {
      "value" : "http://hl7.org/fhir",
      "system" : "url"
    }, {
      "value" : "fhir@lists.hl7.org",
      "system" : "email"
    } ]
  } ]
}