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: Acknowledgment Code (2.5.1 - 1.2.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/acknowledgmentCodes | Version: 1.2.0
Active as of 2026-01-27 | Computable Name: AcknowledgmentCodes
Other Identifiers: OID:2.16.840.1.113883.18.10
Copyright/Legal: HL7 Inc., 2026

HL7-defined code system of concepts specifying acknowledgment codes. For details of usage, see message processing rules in the published Standard. Used in HL7 Version 2.x messaging in the MSA segment.

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

- Hl7VSacknowledgmentCode

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
ackType | ackType | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#ackType | code | ackType
ackValue | ackValue | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#ackValue | code | ackValue

Concepts

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

Code | Display | Definition | versionIntroduced
AA | Original mode: Application Accept - Enhanced mode: Application acknowledgment: Accept | Original mode: Application Accept - Enhanced mode: Application acknowledgment: Accept | 2.1
AE | Original mode: Application Error - Enhanced mode: Application acknowledgment: Error | Original mode: Application Error - Enhanced mode: Application acknowledgment: Error | 2.1
AR | Original mode: Application Reject - Enhanced mode: Application acknowledgment: Reject | Original mode: Application Reject - Enhanced mode: Application acknowledgment: Reject | 2.1
CA | Enhanced mode: Accept acknowledgment: Commit Accept | Enhanced mode: Accept acknowledgment: Commit Accept | 2.2
CE | Enhanced mode: Accept acknowledgment: Commit Error | Enhanced mode: Accept acknowledgment: Commit Error | 2.2
CR | Enhanced mode: Accept acknowledgment: Commit Reject | Enhanced mode: Accept acknowledgment: Commit Reject | 2.2