HL7 v2.5.1 Vocabulary
0.1.0 - ci-build

HL7 v2.5.1 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/frankoemig/hl7.v2.terminology.v251/ and changes regularly. See the Directory of published versions

## : Universal ID Type (2.5.1 - 1.1.0) - XML Representation

Active as of 2026-01-27

Raw xml | Download

    <CodeSystem xmlns="http://hl7.org/fhir">
      <id value="universalIdType"/>
      <text>
        <status value="generated"/>
        <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>
      </text>
      <extension
                 url="http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated">
        <valueString value="2.5.1"/>
      </extension>
      <extension
                 url="http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory">
        <valueString value="generate correct history somehow"/>
      </extension>
      <extension
                 url="http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo">
        <valueString value="0301"/>
      </extension>
      <url
           value="http://terminology.hl7.org/v2plusvocab/CodeSystem/universalIdType"/>
      <identifier>
        <system value="urn:ietf:rfc:3986"/>
        <value value="urn:oid:2.16.840.1.113883.18.186"/>
      </identifier>
      <version value="1.1.0"/>
      <name value="UniversalIdType"/>
      <title value="Universal ID Type (2.5.1 - 1.1.0)"/>
      <status value="active"/>
      <experimental value="true"/>
      <date value="2026-01-27T19:29:18+00:00"/>
      <publisher value="HL7/FO"/>
      <contact>
        <name value="HL7/FO"/>
        <telecom>
          <system value="url"/>
          <value value="http://www.hl7.org"/>
        </telecom>
      </contact>
      <description
                   value="HL7-defined code system of types of UID (Universal Identifiers).   Used in HL7 Version 2.x messaging HD and EI datatypes."/>
      <copyright value="HL7 Inc., 2026"/>
      <caseSensitive value="true"/>
      <compositional value="false"/>
      <content value="complete"/>
      <property>
        <code value="versionIntroduced"/>
        <uri
             value="http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced"/>
        <description value="version when was this code introduced"/>
        <type value="string"/>
      </property>
      <property>
        <code value="versionDeprecated"/>
        <uri
             value="http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionDeprecated"/>
        <description value="version when was this code deprecated"/>
        <type value="string"/>
      </property>
      <property>
        <code value="status"/>
        <uri value="http://hl7.org/fhir/concept-properties#status"/>
        <description
                     value="A code that indicates the status of the concept. Typical values are active, experimental, deprecated, and retired"/>
        <type value="code"/>
      </property>
      <property>
        <code value="comment"/>
        <uri
             value="http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#comment"/>
        <description
                     value="A string that provides additional detail pertinent to the use or understanding of the concept"/>
        <type value="string"/>
      </property>
      <property>
        <code value="usage"/>
        <uri
             value="http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#usage"/>
        <description value="usage notes for this code"/>
        <type value="string"/>
      </property>
      <property>
        <code value="modified"/>
        <uri
             value="http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#modified"/>
        <description value="date of last modification"/>
        <type value="dateTime"/>
      </property>
      <concept>
        <code value="DNS"/>
        <display value="Domain Name System"/>
        <definition
                    value="An Internet dotted name. Either in ASCII or as integers"/>
        <designation>
          <language value="de"/>
          <value value="Internet-Adresse"/>
        </designation>
        <property>
          <code value="comment"/>
          <valueString
                       value="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)."/>
        </property>
        <property>
          <code value="usage"/>
          <valueString value="Either in ASCII or as integers"/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
      <concept>
        <code value="GUID"/>
        <display value="globally unique identifier"/>
        <definition value="Same as UUID."/>
        <designation>
          <language value="de"/>
          <value value="GUID"/>
        </designation>
        <property>
          <code value="comment"/>
          <valueString
                       value="Same as UUID.Retained for backward compatibility only as of v2.7; use UUID instead"/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
      <concept>
        <code value="HCD"/>
        <display value="CEN Healthcare Coding Identifier"/>
        <definition
                    value="The CEN Healthcare Coding Scheme Designator. (Identifiers used in DICOM follow this assignment scheme.)"/>
        <property>
          <code value="comment"/>
          <valueString
                       value="The CEN Healthcare Coding Scheme Designator. Retained for backward compatibility only as of v2.7; does not identify Assigning Authorities"/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
      <concept>
        <code value="HL7"/>
        <display value="HL7 registration schemes"/>
        <definition value="Reserved for future HL7 registration schemes"/>
        <designation>
          <language value="de"/>
          <value value="für HL7 reserviert"/>
        </designation>
        <property>
          <code value="comment"/>
          <valueString
                       value="Retained for backward compatibility only as of v2.7; HL7 assigns ISO OIDs for Assigning Authorities"/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
      <concept>
        <code value="ISO"/>
        <display value="ISO Object Identifier"/>
        <definition
                    value="An International Standards Organization Object Identifier"/>
        <designation>
          <language value="de"/>
          <value value="ISO-ID"/>
        </designation>
        <property>
          <code value="comment"/>
          <valueString
                       value="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"/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
      <concept>
        <code value="L"/>
        <display value="Local"/>
        <definition
                    value="These are reserved for locally defined coding schemes."/>
        <designation>
          <language value="de"/>
          <value value="reserviert für lokale Tabellen"/>
        </designation>
        <property>
          <code value="comment"/>
          <valueString
                       value="Locally defined coding entity identifier.Retained for backward compatibility only as of v 2.8"/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
      <concept>
        <code value="M"/>
        <display value="Local"/>
        <definition
                    value="These are reserved for locally defined coding schemes."/>
        <designation>
          <language value="de"/>
          <value value="reserviert für lokale Tabellen"/>
        </designation>
        <property>
          <code value="comment"/>
          <valueString
                       value="Locally defined coding entity identifier.Retained for backward compatibility only as of v 2.8"/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
      <concept>
        <code value="N"/>
        <display value="Local"/>
        <definition
                    value="These are reserved for locally defined coding schemes."/>
        <designation>
          <language value="de"/>
          <value value="reserviert für lokale Tabellen"/>
        </designation>
        <property>
          <code value="comment"/>
          <valueString
                       value="Locally defined coding entity identifier.Retained for backward compatibility only as of v 2.8"/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
      <concept>
        <code value="Random"/>
        <display value="Random"/>
        <definition
                    value="Usually a base64 encoded string of random bits.&lt;p&gt;The uniqueness depends on the length of the bits. Mail systems often generate ASCII string &quot;unique names,&quot; from a combination of random bits and system names. Obviously, such identifiers will not be constr"/>
        <property>
          <code value="comment"/>
          <valueString
                       value="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"/>
        </property>
        <property>
          <code value="usage"/>
          <valueString
                       value="The uniqueness depends on the length of the bits. Mail systems often
    generate ASCII string &quot;unique names,&quot; from a combination of random bits
    and system names. Obviously, such identifiers will not be constrained to the
    base64 character set."/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
      <concept>
        <code value="URI"/>
        <display value="Uniform Resource Identifier"/>
        <definition value="Uniform Resource Identifier"/>
        <designation>
          <language value="de"/>
          <value value="URI"/>
        </designation>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.5"/>
        </property>
      </concept>
      <concept>
        <code value="UUID"/>
        <display value="Universal Unique Identifier"/>
        <definition value="The DCE Universal Unique Identifier"/>
        <designation>
          <language value="de"/>
          <value value="UUID"/>
        </designation>
        <property>
          <code value="comment"/>
          <valueString
                       value="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"/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
      <concept>
        <code value="x400"/>
        <display value="X.400 MHS identifier"/>
        <definition value="An X.400 MHS format identifier"/>
        <designation>
          <language value="de"/>
          <value value="X.400"/>
        </designation>
        <property>
          <code value="comment"/>
          <valueString value="Recommended format is in accordance with RFC 1649"/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
      <concept>
        <code value="x500"/>
        <display value="X500 directory Name"/>
        <definition value="An X.500 directory name"/>
        <designation>
          <language value="de"/>
          <value value="X.500 Verzeichnisname"/>
        </designation>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3"/>
        </property>
      </concept>
    </CodeSystem>