HL7 v2.1 Vocabulary
0.1.0 - ci-build

HL7 v2.1 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.v21/ and changes regularly. See the Directory of published versions

## CodeSystem: Message Type (2.1 - 1.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/messageType | Version: 1.0.0
Active as of 2026-01-27 | Computable Name: MessageType
Other Identifiers: OID:2.16.840.1.113883.18.30
Copyright/Legal: HL7 Inc., 2026

HL7-defined code system of concepts which specify message types. 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:

- Hl7VSmessageType

Properties

This code system defines the following properties for its concepts

Name | Code | URI | Type | Description | Value Set
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 |
chapter | chapter | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#chapter | string | chapter |
event | event | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#event | code | event | `http://terminology.hl7.org/v2plusvocab/ValueSet/hl7VShl7VSevent`

Concepts

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

Code | Display | Definition | versionIntroduced | modified | event | Deutsch (German, de)
ACK | General Acknowledgment CNT II | General Acknowledgment CNT II | 2.1 |  | A01, A02, A03, A04, A05, A06, A07, A08, A09, A10, A11, A12, A13, A14, A15, A16, A17, A18, A20, A21, A22, A23, A24, O01, O02, P01, P02, P03, Q03, Q05, R01, R03 | Empfangsbestätigung
ADR | ADT response | ADT response | 2.1 | 2024-08-12 |  | Antwort auf Anfrage bezüglich Aufnahme / Verlegung / Entlassung von Patienten
ADT | ADT message | ADT message | 2.1 | 2024-08-12 |  | Aufnahme / Entlassung / Verlegung
BAR | Add/change billing account BLN VI | Add/change billing account BLN VI | 2.1 |  | P01, P02 | Rechnungsänderung
DSR | Display response QRY V | Display response QRY V | 2.1 |  | P04, Q01, Q03 | angezeigte Antwort
MCF | Delayed acknowledgment CNT II | Delayed acknowledgment CNT II | 2.1 |  | Q02 | verzögerte Empfangsbestätigung
ORF | Observ. Result/record resp. ANR VII | Observ. Result/record resp. ANR VII | 2.1 |  | R02 | Untersuchungsergebnisse
ORM | Order ORD IV | Order ORD IV | 2.1 |  | O01 | Auftrag
ORR | Order response message ORD IV | Order response message ORD IV | 2.1 |  | O02 | Auftragsantwort
ORU | Observ. result/unsolicited ANR VII | Observ. result/unsolicited ANR VII | 2.1 |  | R01, R03 | nicht angeforderte Beobachtungsergebnisse
OSQ | Order status query ORD IV | Order status query ORD IV | 2.1 |  |  | Anfrage nach Auftragsstatus
UDM | Unsolicited display QRY V | Unsolicited display QRY V | 2.1 |  | Q05 | nicht angeforderte Anzeige