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 Sets (2.5.1 - 1.2.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/alternateCharacterSets | Version: 1.2.0
Active as of 2026-01-27 | Computable Name: AlternateCharacterSets
Other Identifiers: OID:2.16.840.1.113883.18.116
Copyright/Legal: HL7 Inc., 2026

HL7-defined code system of concepts used to specify the character set(s) in use. Includes both single-byte and double-byte characters sets, and used in Version 2.x messaging in the MSH segment.

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

- Hl7VSalternateCharacterSets

Properties

This code system defines the following properties for its concepts

Name | Code | URI | Type | Description
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/alternateCharacterSets` defines the following codes:

Code | Display | Definition | versionIntroduced | comment | modified
8859/1 | The printable characters from the ISO 8859/1 Character set | The printable characters from the ISO 8859/1 Character set | 2.3 |  |
8859/2 | The printable characters from the ISO 8859/2 Character set | The printable characters from the ISO 8859/2 Character set | 2.3 |  |
8859/3 | The printable characters from the ISO 8859/3 Character set | The printable characters from the ISO 8859/3 Character set | 2.3 |  |
8859/4 | The printable characters from the ISO 8859/4 Character set | The printable characters from the ISO 8859/4 Character set | 2.3 |  |
8859/5 | The printable characters from the ISO 8859/5 Character set | The printable characters from the ISO 8859/5 Character set | 2.3 |  |
8859/6 | The printable characters from the ISO 8859/6 Character set | The printable characters from the ISO 8859/6 Character set | 2.3 |  |
8859/7 | The printable characters from the ISO 8859/7 Character set | The printable characters from the ISO 8859/7 Character set | 2.3 |  |
8859/8 | The printable characters from the ISO 8859/8 Character set | The printable characters from the ISO 8859/8 Character set | 2.3 |  |
8859/9 | The printable characters from the ISO 8859/9 Character set | The printable characters from the ISO 8859/9 Character set | 2.3 |  |
ASCII | The printable 7-bit ASCII character set | The printable 7-bit ASCII character set | 2.3 |  |
BIG-5 | Code for Taiwanese Character Set (BIG-5) | Code for Taiwanese Character Set (BIG-5) | 2.5 |  |
CNS 11643-1992 | Code for Taiwanese Character Set (CNS 11643-1992) | Code for Taiwanese Character Set (CNS 11643-1992) | 2.5 |  |
GB 18030-2000 | Code for Chinese Character Set (GB 18030-2000) | Code for Chinese Character Set (GB 18030-2000) | 2.5 |  |
ISO IR14 | Code for Information Exchange (one byte)(JIS X 0201-1976). | Code for Information Exchange (one byte)(JIS X 0201-1976). | 2.3.1 |  |
ISO IR159 | Code of the supplementary Japanese Graphic Character set for information interchange (JIS X 0212-1990). | Code of the supplementary Japanese Graphic Character set for information interchange (JIS X 0212-1990). | 2.3.1 | Note that the code contains a space, i.e. "ISO IR159". |
ISO IR87 | Code for the Japanese Graphic Character set for information interchange (JIS X 0208-1990), | Code for the Japanese Graphic Character set for information interchange (JIS X 0208-1990), | 2.3.1 |  |
JAS2020 | A subset of ISO2020 used for most Kanjii transmissions | A subset of ISO2020 used for most Kanjii transmissions | 2.3 |  | 2025-07-30
JIS X 0202 | ISO 2022 with escape sequences for Kanjii | ISO 2022 with escape sequences for Kanjii | 2.3 |  | 2025-07-30
KS X 1001 | Code for Korean Character Set (KS X 1001) | Code for Korean Character Set (KS X 1001) | 2.5 |  |
UNICODE | The world wide character standard from ISO/IEC 10646-1-1993 | The world wide character standard from ISO/IEC 10646-1-1993 | 2.3 |  |
UNICODE UTF-16 | UCS Transformation Format, 16-bit form | UCS Transformation Format, 16-bit form | 2.5 |  |
UNICODE UTF-32 | UCS Transformation Format, 32-bit form | UCS Transformation Format, 32-bit form | 2.5 |  |
UNICODE UTF-8 | UCS Transformation Format, 8-bit form | UCS Transformation Format, 8-bit form | 2.5 |  |