http://terminology.hl7.org/CodeSystem/media-type|4.0.1

{
  "description" : "Codes for high level media categories.",
  "compose" : null,
  "package" : "hl7.fhir.r4.core@4.0.1",
  "date" : "2017-12-08T02:32:59Z",
  "meta" : {
    "profile" : [ "http://hl7.org/fhir/StructureDefinition/shareablecodesystem" ],
    "lastUpdated" : "2019-11-01T09:29:23.356+11:00"
  },
  "publisher" : "HL7 (FHIR Project)",
  "content" : "complete",
  "name" : "MediaType",
  "experimental" : false,
  "resourceType" : "CodeSystem",
  "title" : "Media Type",
  "supliment" : null,
  "extension" : [ {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "oo"
  }, {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode" : "trial-use"
  }, {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger" : 1
  } ],
  "status" : "draft",
  "id" : "69aaae10-5f22-57e4-a136-cd38ff9b7f24",
  "valueSet" : "http://hl7.org/fhir/ValueSet/media-type",
  "url" : "http://terminology.hl7.org/CodeSystem/media-type",
  "identifier" : [ {
    "value" : "urn:oid:2.16.840.1.113883.4.642.1.326",
    "system" : "urn:ietf:rfc:3986"
  } ],
  "concept" : [ {
    "code" : "image",
    "display" : "Image",
    "definition" : "The media consists of one or more unmoving images, including photographs, computer-generated graphs and charts, and scanned documents"
  }, {
    "code" : "video",
    "display" : "Video",
    "definition" : "The media consists of a series of frames that capture a moving image"
  }, {
    "code" : "audio",
    "display" : "Audio",
    "definition" : "The media consists of a sound recording"
  } ],
  "caseSensitive" : true,
  "version" : "4.0.1",
  "contact" : [ {
    "telecom" : [ {
      "value" : "http://hl7.org/fhir",
      "system" : "url"
    }, {
      "value" : "fhir@lists.hl7.org",
      "system" : "email"
    } ]
  }, {
    "telecom" : [ {
      "value" : "http://hl7.org/fhir",
      "system" : "url"
    }, {
      "value" : "fhir@lists.hl7.org",
      "system" : "email"
    } ]
  } ]
}