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

## CodeSystem: Coding System (2.4 - 1.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/codingSystem | Version: 1.0.0
Active as of 2026-01-27 | Computable Name: CodingSystem
Other Identifiers: OID:2.16.840.1.113883.18.247
Copyright/Legal: HL7 Inc., 2026

HL7-defined code system of concepts specifying the coding system. This table is maintained outside of the published Version 2 standards, and may be found at http://www.hl7.org/Special/committees/vocab/table_0396/index.cfm. Used in HL7 Version 2.x messaging in the CWE segment.

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

- Hl7VScodingSystem

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
category | category | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#category | string | category
country | country | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#country | string | country

Concepts

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

Code | Display | Definition | versionIntroduced | usage | modified | country
99zzz | Local general code where z is an alphanumeric character | Local general code where z is an alphanumeric character | 2.4 | Locally defined codes for purpose of sender or receiver - 99zzz (where z is an alphanumeric character). | 2024-08-09 |
ACR | American College of Radiology finding codes | American College of Radiology finding codes | 2.4 |  |  |
ART | WHO Adverse Reaction Terms | WHO Adverse Reaction Terms | 2.4 |  |  |
AS4 | ASTM E1238/ E1467 Universal | ASTM E1238/ E1467 Universal | 2.4 |  |  |
AS4E | AS4 Neurophysiology Codes | AS4 Neurophysiology Codes | 2.4 |  |  |
ATC | American Type Culture Collection | American Type Culture Collection | 2.4 |  |  |
C4 | CPT-4 | CPT-4 | 2.4 |  |  |
C5 | CPT-5 | CPT-5 | 2.4 |  |  |
CAS | Chemical abstract codes | Chemical abstract codes | 2.4 |  |  |
CD2 | CDT-2 Codes | CDT-2 Codes | 2.4 |  |  |
CDCA | CDC Analyte Codes | CDC Analyte Codes | 2.4 |  |  | US
CDCM | CDC Methods/Instruments Codes | CDC Methods/Instruments Codes | 2.4 |  |  | US
CDS | CDC Surveillance | CDC Surveillance | 2.4 |  |  |
CE | CEN ECG diagnostic codes | CEN ECG diagnostic codes | 2.4 |  |  |
CLP | CLIP | CLIP | 2.4 |  |  |
CPTM | CPT Modifier Code | CPT Modifier Code | 2.4 |  |  |
CST | COSTART | COSTART | 2.4 |  |  |
CVX | CDC Vaccine Codes | CDC Vaccine Codes | 2.4 |  |  |
DCL | DICOM Class Label | DICOM Class Label | 2.4 |  |  |
DCM | DICOM modality codes | DICOM modality codes | 2.4 |  |  |
DQL | DICOM Query Label | DICOM Query Label | 2.4 |  |  |
E | EUCLIDES | EUCLIDES | 2.4 |  |  |
E5 | Euclides quantity codes | Euclides quantity codes | 2.4 |  |  |
E6 | Euclides Lab method codes | Euclides Lab method codes | 2.4 |  |  |
E7 | Euclides Lab equipment codes | Euclides Lab equipment codes | 2.4 |  |  |
ENZC | Enzyme Codes | Enzyme Codes | 2.4 |  |  |
FDDC | First DataBank Drug Codes | First DataBank Drug Codes | 2.4 |  |  |
FDDX | First DataBank Diagnostic Codes | First DataBank Diagnostic Codes | 2.4 |  |  |
FDK | FDA K10 | FDA K10 | 2.4 |  |  |
HB | HIBCC | HIBCC | 2.4 |  |  |
HCPCS | HCFA Common Procedure Coding System | HCFA Common Procedure Coding System | 2.4 |  |  |
HHC | Home Health Care | Home Health Care | 2.4 |  |  |
HI | Health Outcomes | Health Outcomes | 2.4 |  |  |
HL7nnnn | HL7 Defined Codes where nnnn is the HL7 table number | HL7 Defined Codes where nnnn is the HL7 table number | 2.4 |  |  |
HPC | HCFA Procedure Codes (HCPCS) | HCFA Procedure Codes (HCPCS) | 2.4 |  |  |
I10 | ICD-10 | ICD-10 | 2.4 |  |  |
I10P | ICD-10 Procedure Codes | ICD-10 Procedure Codes | 2.4 |  |  |
I9 | ICD9 | ICD9 | 2.4 |  |  |
I9C | ICD-9CM | ICD-9CM | 2.4 |  |  |
IBT | ISBT | ISBT | 2.4 |  |  |
IC2 | ICHPPC-2 | ICHPPC-2 | 2.4 |  |  |
ICDO | International Classification of Diseases for Oncology | International Classification of Diseases for Oncology | 2.4 |  |  |
ICS | ICCS | ICCS | 2.4 |  |  |
ICSD | International Classification of Sleep Disorders | International Classification of Sleep Disorders | 2.4 |  |  |
ISOnnnn | ISO Defined Codes where nnnn is the ISO table number | ISO Defined Codes where nnnn is the ISO table number | 2.4 |  |  |
IUPC | IUPAC/IFCC Component Codes | IUPAC/IFCC Component Codes | 2.4 |  |  |
IUPP | IUPAC/IFCC Property Codes | IUPAC/IFCC Property Codes | 2.4 |  |  |
JC8 | Japanese Chemistry | Japanese Chemistry | 2.4 |  |  |
L | Local general code | Local general code | 2.4 | Locally defined codes for purpose of sender or receiver. Local codes can be identified by L (for backward compatibility) | 2024-08-09 |
LB | Local billing code | Local billing code | 2.4 |  |  |
LN | Logical Observation Identifier Names and Codes (LOINC(r)) | Logical Observation Identifier Names and Codes (LOINC(r)) | 2.4 |  |  |
MCD | Medicaid | Medicaid | 2.4 |  |  |
MCR | Medicare | Medicare | 2.4 |  |  |
MDDX | Medispan Diagnostic Codes | Medispan Diagnostic Codes | 2.4 |  |  |
MEDC | Medical Economics Drug Codes | Medical Economics Drug Codes | 2.4 |  |  |
MEDR | Medical Dictionary for Drug Regulatory Affairs (MEDDRA) | Medical Dictionary for Drug Regulatory Affairs (MEDDRA) | 2.4 |  |  |
MEDX | Medical Economics Diagnostic Codes | Medical Economics Diagnostic Codes | 2.4 |  |  |
MGPI | Medispan GPI | Medispan GPI | 2.4 |  |  |
MVX | CDC Vaccine Manufacturer Codes | CDC Vaccine Manufacturer Codes | 2.4 |  |  |
NDA | NANDA | NANDA | 2.4 |  |  |
NDC | National drug codes | National drug codes | 2.4 |  |  |
NIC | Nursing Interventions Classification | Nursing Interventions Classification | 2.4 |  |  |
NPI | National Provider Identifier | National Provider Identifier | 2.4 |  |  |
OHA | Omaha System | Omaha System | 2.4 |  |  |
POS | POS Codes | POS Codes | 2.4 |  |  |
RC | Read Classification | Read Classification | 2.4 |  |  |
SDM | SNOMED- DICOM Microglossary | SNOMED- DICOM Microglossary | 2.4 |  |  |
SNM | Systemized Nomenclature of Medicine (SNOMED) | Systemized Nomenclature of Medicine (SNOMED) | 2.4 |  |  |
SNM3 | SNOMED International | SNOMED International | 2.4 |  |  |
SNT | SNOMED topology codes (anatomic sites) | SNOMED topology codes (anatomic sites) | 2.4 |  |  |
UC | UCDS | UCDS | 2.4 |  |  |
UMD | MDNS | MDNS | 2.4 |  |  |
UML | Unified Medical Language | Unified Medical Language | 2.4 |  |  |
UPC | Universal Product Code | Universal Product Code | 2.4 |  |  |
UPIN | UPIN | UPIN | 2.4 |  |  |
W1 | WHO record # drug codes (6 digit) | WHO record # drug codes (6 digit) | 2.4 |  |  |
W2 | WHO record # drug codes (8 digit) | WHO record # drug codes (8 digit) | 2.4 |  |  |
W4 | WHO record # code with ASTM extension | WHO record # code with ASTM extension | 2.4 |  |  |
WC | WHO ATC | WHO ATC | 2.4 |  |  |