{
  "resourceType" : "CodeSystem",
  "id" : "universalIdType",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><ul><li>Include all codes defined in <a href=\"CodeSystem-universalIdType.html\"><code>http://terminology.hl7.org/v2plusvocab/CodeSystem/universalIdType</code></a></li></ul></div>"
  },
  "extension" : [{
    "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated",
    "valueString" : "2.6"
  },
  {
    "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory",
    "valueString" : "generate correct history somehow"
  },
  {
    "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo",
    "valueString" : "0301"
  }],
  "url" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/universalIdType",
  "identifier" : [{
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:oid:2.16.840.1.113883.18.186"
  },
  {
    "system" : "urn:ietf:rfc:3986",
    "value" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/v2-0301"
  }],
  "version" : "1.1.0",
  "name" : "UniversalIdType",
  "title" : "Universal ID Type (2.6 - 1.1.0)",
  "status" : "active",
  "experimental" : true,
  "date" : "2026-03-13T11:09:09+00:00",
  "publisher" : "HL7/FO",
  "contact" : [{
    "name" : "HL7/FO",
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org"
    }]
  }],
  "description" : "HL7-defined code system of types of UID (Universal Identifiers).   Used in HL7 Version 2.x messaging HD and EI datatypes.",
  "copyright" : "HL7 Inc., 2026",
  "caseSensitive" : true,
  "compositional" : false,
  "content" : "complete",
  "property" : [{
    "code" : "versionIntroduced",
    "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced",
    "description" : "version when was this code introduced",
    "type" : "string"
  },
  {
    "code" : "versionDeprecated",
    "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionDeprecated",
    "description" : "version when was this code deprecated",
    "type" : "string"
  },
  {
    "code" : "status",
    "uri" : "http://hl7.org/fhir/concept-properties#status",
    "description" : "A code that indicates the status of the concept. Typical values are active, experimental, deprecated, and retired",
    "type" : "code"
  },
  {
    "code" : "comment",
    "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#comment",
    "description" : "A string that provides additional detail pertinent to the use or understanding of the concept",
    "type" : "string"
  },
  {
    "code" : "usage",
    "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#usage",
    "description" : "usage notes for this code",
    "type" : "string"
  },
  {
    "code" : "modified",
    "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#modified",
    "description" : "date of last modification",
    "type" : "dateTime"
  }],
  "concept" : [{
    "code" : "DNS",
    "display" : "Domain Name System",
    "definition" : "An Internet dotted name. Either in ASCII or as integers",
    "designation" : [{
      "language" : "de",
      "value" : "Internet-Adresse"
    }],
    "property" : [{
      "code" : "comment",
      "valueString" : "An Internet host name, in accordance with RFC 1035; or an IP address. Either in ASCII or as integers, with periods between components (“dotted” notation)."
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  },
  {
    "code" : "GUID",
    "display" : "globally unique identifier",
    "definition" : "Same as UUID.",
    "designation" : [{
      "language" : "de",
      "value" : "GUID"
    }],
    "property" : [{
      "code" : "comment",
      "valueString" : "Same as UUID.Retained for backward compatibility only as of v2.7; use UUID instead"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  },
  {
    "code" : "HCD",
    "display" : "CEN Healthcare Coding Identifier",
    "definition" : "The CEN Healthcare Coding Scheme Designator. (Identifiers used in DICOM follow this assignment scheme.)",
    "property" : [{
      "code" : "comment",
      "valueString" : "The CEN Healthcare Coding Scheme Designator. Retained for backward compatibility only as of v2.7; does not identify Assigning Authorities"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  },
  {
    "code" : "HL7",
    "display" : "HL7 registration schemes",
    "definition" : "Reserved for future HL7 registration schemes",
    "designation" : [{
      "language" : "de",
      "value" : "für HL7 reserviert"
    }],
    "property" : [{
      "code" : "comment",
      "valueString" : "Retained for backward compatibility only as of v2.7; HL7 assigns ISO OIDs for Assigning Authorities"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  },
  {
    "code" : "ISO",
    "display" : "ISO Object Identifier",
    "definition" : "An International Standards Organization Object Identifier",
    "designation" : [{
      "language" : "de",
      "value" : "ISO-ID"
    }],
    "property" : [{
      "code" : "comment",
      "valueString" : "An International Standards Organization Object Identifier (OID), in accordance with ISO/IEC 8824.  Formatted as decimal digits separated by periods; recommended limit of 64 characters"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  },
  {
    "code" : "L",
    "display" : "Local",
    "definition" : "These are reserved for locally defined coding schemes.",
    "designation" : [{
      "language" : "de",
      "value" : "reserviert für lokale Tabellen"
    }],
    "property" : [{
      "code" : "comment",
      "valueString" : "Locally defined coding entity identifier.Retained for backward compatibility only as of v 2.8"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  },
  {
    "code" : "M",
    "display" : "Local",
    "definition" : "These are reserved for locally defined coding schemes.",
    "designation" : [{
      "language" : "de",
      "value" : "reserviert für lokale Tabellen"
    }],
    "property" : [{
      "code" : "comment",
      "valueString" : "Locally defined coding entity identifier.Retained for backward compatibility only as of v 2.8"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  },
  {
    "code" : "N",
    "display" : "Local",
    "definition" : "These are reserved for locally defined coding schemes.",
    "designation" : [{
      "language" : "de",
      "value" : "reserviert für lokale Tabellen"
    }],
    "property" : [{
      "code" : "comment",
      "valueString" : "Locally defined coding entity identifier.Retained for backward compatibility only as of v 2.8"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  },
  {
    "code" : "Random",
    "display" : "Random",
    "definition" : "Usually a base64 encoded string of random bits.<p>The uniqueness depends on the length of the bits. Mail systems often generate ASCII string \"unique names,\" from a combination of random bits and system names. Obviously, such identifiers will not be constr",
    "property" : [{
      "code" : "comment",
      "valueString" : "Usually a base64 encoded string of random bits.Retained for backward compatibility only as of v2.7; equivalent to a locally defined entity identifier scheme; use L. M, or N instead. Note: Random IDs are typically used for instance identifiers, rather than an identifier of an Assigning Authority that issues instance identifiers"
    },
    {
      "code" : "usage",
      "valueString" : "The uniqueness depends on the length of the bits. Mail systems often\r\ngenerate ASCII string \"unique names,\" from a combination of random bits\r\nand system names. Obviously, such identifiers will not be constrained to the\r\nbase64 character set."
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  },
  {
    "code" : "URI",
    "display" : "Uniform Resource Identifier",
    "definition" : "Uniform Resource Identifier",
    "designation" : [{
      "language" : "de",
      "value" : "URI"
    }],
    "property" : [{
      "code" : "versionIntroduced",
      "valueString" : "2.5"
    }]
  },
  {
    "code" : "UUID",
    "display" : "Universal Unique Identifier",
    "definition" : "The DCE Universal Unique Identifier",
    "designation" : [{
      "language" : "de",
      "value" : "UUID"
    }],
    "property" : [{
      "code" : "comment",
      "valueString" : "The DCE Universal Unique Identifier, in accordance with RFC 4122. Recommended format is 32 hexadecimal digits separated by hyphens, in the digit grouping 8-4-4-4-12"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  },
  {
    "code" : "x400",
    "display" : "X.400 MHS identifier",
    "definition" : "An X.400 MHS format identifier",
    "designation" : [{
      "language" : "de",
      "value" : "X.400"
    }],
    "property" : [{
      "code" : "comment",
      "valueString" : "Recommended format is in accordance with RFC 1649"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  },
  {
    "code" : "x500",
    "display" : "X500 directory Name",
    "definition" : "An X.500 directory name",
    "designation" : [{
      "language" : "de",
      "value" : "X.500 Verzeichnis­name"
    }],
    "property" : [{
      "code" : "versionIntroduced",
      "valueString" : "2.3"
    }]
  }]
}