HL7 v2.4 Vocabulary
0.1.0 - ci-build

HL7 v2.4 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.v24/ and changes regularly. See the Directory of published versions

## : Alternate Character Set Handling Scheme (2.4 - 1.0.0) - XML Representation

Active as of 2026-01-27

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    <CodeSystem xmlns="http://hl7.org/fhir">
      <id value="alternateCharacterSetHandlingScheme"/>
      <text>
        <status value="generated"/>
        <div xmlns="http://www.w3.org/1999/xhtml"><ul><li>Include all codes defined in <a href="CodeSystem-alternateCharacterSetHandlingScheme.html"><code>http://terminology.hl7.org/v2plusvocab/CodeSystem/alternateCharacterSetHandlingScheme</code></a></li></ul></div>
      </text>
      <extension
                 url="http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated">
        <valueString value="2.4"/>
      </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="0356"/>
      </extension>
      <url
           value="http://terminology.hl7.org/v2plusvocab/CodeSystem/alternateCharacterSetHandlingScheme"/>
      <identifier>
        <system value="urn:ietf:rfc:3986"/>
        <value value="urn:oid:2.16.840.1.113883.18.216"/>
      </identifier>
      <version value="1.0.0"/>
      <name value="AlternateCharacterSetHandlingScheme"/>
      <title value="Alternate Character Set Handling Scheme (2.4 - 1.0.0)"/>
      <status value="active"/>
      <experimental value="true"/>
      <date value="2026-01-27T19:23:17+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 concept that specify the scheme used when any alternative character sets are specified in the second or later iterations of MSH-18 Character Set, and if any special handling scheme is needed.  Used in HL7 Version 2.x messaging in the MSH segment."/>
      <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="2.3"/>
        <display value="The character set switching mode specified in HL7 2.3"/>
        <definition
                    value="The character set switching mode specified in HL7 2.3, sections 2.8.28.6.1, and 2.9.2.  Note that the escape sequences used in this mode do not use the ASCII &quot;esc&quot; character. They are &quot;HL7 escape sequences&quot; as defined in HL7 2.3, sec.  2.9 as defined in I"/>
        <property>
          <code value="comment"/>
          <valueString
                       value="Note that the escape sequences used in this mode are &quot;HL7 escapes sequences&quot; as defined in HL7 2.3, sec.  2.9, and do not use the ASCII &quot;esc&quot; character, as defined in ISO 2022-1994"/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3.1"/>
        </property>
      </concept>
      <concept>
        <code value="ISO 2022-1994"/>
        <display
                 value="This standard is titled &quot;Information Technology - Character Code Structure and Extension Technique&quot;."/>
        <definition
                    value="This standard is titled &quot;Information Technology - Character Code Structure and Extension Technique&quot;. This standard specifies an escape sequence from basic one byte character set to specified other character set, and vice versa."/>
        <property>
          <code value="comment"/>
          <valueString
                       value="This standard specifies an escape sequence from basic one byte character set to specified other character set, and vice versa.  The escape sequence explicitly specifies what alternate character set to be evoked. Note that in this mode, the actual ASCII escape character is used as defined in the referenced ISO document. As noted in 1.6.1., escape sequences to/from alternate character set should occur within HL7 delimiters. In other words, HL7 delimiters are basic one byte characters only, and just before and just after delimiters, character encoding status should be the basic one byte set.  This value is allowed only for HL7 v. 2.3.1."/>
        </property>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3.1"/>
        </property>
      </concept>
    </CodeSystem>