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

CodeSystem: Alternate Character Set Handling Scheme (2.5.1 - 1.1.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/alternateCharacterSetHandlingScheme Version: 1.1.0
Active as of 2026-01-27 Computable Name: AlternateCharacterSetHandlingScheme
Other Identifiers: OID:2.16.840.1.113883.18.216

Copyright/Legal: HL7 Inc., 2026

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.

This Code system is referenced in the content logical definition of the following value sets:

Properties

This code system defines the following properties for its concepts

NameCodeURITypeDescription
versionIntroduced versionIntroduced http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced string version when was this code introduced
versionDeprecated versionDeprecated http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionDeprecated string version when was this code deprecated
status status http://hl7.org/fhir/concept-properties#status code A code that indicates the status of the concept. Typical values are active, experimental, deprecated, and retired
comment comment http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#comment string A string that provides additional detail pertinent to the use or understanding of the concept
usage usage http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#usage string usage notes for this code
modified modified http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#modified dateTime date of last modification

Concepts

This case-sensitive code system http://terminology.hl7.org/v2plusvocab/CodeSystem/alternateCharacterSetHandlingScheme defines the following codes:

CodeDisplayDefinitionversionIntroduced
2.3 The character set switching mode specified in HL7 2.5 The character set switching mode specified in HL7 2.5, section 2.7.2, “Escape sequences supporting multiple character sets” and section 2.A.46, "XPN - extended person name". 2.3.1
ISO 2022-1994 This standard is titled "Information Technology - Character Code Structure and Extension Technique". This standard is titled "Information Technology - Character Code Structure and Extension Technique". . 2.3.1