IETF RFC 1766

{
  "description" : "Codes representing languages for which a person has some level of proficiency for written or spoken communication.\r\n\r\n*Examples:* Spanish, Italian, German, English, American Sign, etc.",
  "date" : "2021-11-09T10:00:00+10:00",
  "publisher" : "TBD - External Body",
  "content" : "not-present",
  "property" : null,
  "name" : "IETF1766",
  "experimental" : false,
  "resourceType" : "CodeSystem",
  "title" : "IETF RFC 1766",
  "extension" : [ {
    "url" : "http://health-samurai.io/extensions/source",
    "valueCode" : "db"
  } ],
  "status" : "retired",
  "id" : "9c129487-8bda-4849-a7b4-ce05648bd3ea",
  "url" : "http://terminology.hl7.org/CodeSystem/IETF1766",
  "identifier" : [ {
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:oid:2.16.840.1.113883.6.84"
  } ],
  "version" : "2.0.0",
  "text" : {
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p>This code system http://terminology.hl7.org/CodeSystem/IETF1766 defines many codes, but they are not represented here</p></div>",
    "status" : "generated"
  }
}