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: Event (2.1 - 1.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/event | Version: 1.0.0
Active as of 2026-01-27 | Computable Name: Event
Other Identifiers: OID:2.16.840.1.113883.18.4
Copyright/Legal: HL7 Inc., 2026

HL7-defined code system of concepts specifying the trigger event for Version 2.x interface messages. 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:

- Hl7VSevent

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 |
msgstruct | msgstruct | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#msgstruct | code | msgstruct | `http://terminology.hl7.org/v2plusvocab/ValueSet/hl7VS354-1`
msgtype | msgtype | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#msgtype | code | msgtype | `http://terminology.hl7.org/v2plusvocab/ValueSet/hl7VShl7VSmessageType`

Concepts

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

Code | Display | Definition | versionIntroduced | msgstruct | Deutsch (German, de)
A01 | Admit a patient | Admit a patient | 2.1 | ? | Aufnahme
A02 | Transfer a Patient | Transfer a Patient | 2.1 | ? | Verlegung
A03 | Discharge a Patient | Discharge a Patient | 2.1 | ? | Entlassung
A04 | Register a Patient | Register a Patient | 2.1 | ? | Patientenregistrierung (Besuchsmeldung)
A05 | Pre-admit a Patient | Pre-admit a Patient | 2.1 | ? | Voraufnahme eines PAtienten
A06 | Transfer an outpatient to inpatient | Transfer an outpatient to inpatient | 2.1 | ? | Änderung von ambulant in stationär
A07 | Transfer an Inpatient to Outpatient | Transfer an Inpatient to Outpatient | 2.1 | ? | Änderung von stationär in ambulant
A08 | Update patient information | Update patient information | 2.1 | ? | Änderung von Patienteninformationen
A09 | Patient departing | Patient departing | 2.1 | ? | Patientenabgang
A10 | Patient arriving | Patient arriving | 2.1 | ? | Patientenzugang (Bettenzuweisung)
A11 | Cancel admit | Cancel admit | 2.1 | ? | Aufnahme löschen
A12 | Cancel transfer | Cancel transfer | 2.1 | ? | Verlegung löschen
A13 | Cancel discharge | Cancel discharge | 2.1 | ? | Entlassung löschen
A14 | Pending admit | Pending admit | 2.1 | ? | bevorstehende Aufnahme
A15 | Pending transfer | Pending transfer | 2.1 | ? | Bevorstehende Verlegung
A16 | Pending discharge | Pending discharge | 2.1 | ? | bevorstehende Entlassung
A17 | Swap Patients | Swap Patients | 2.1 | ? | Bettentausch zweier Patienten
A18 | Merge patient information | Merge patient information | 2.1 | ? | Patienteninformation zusammenführen
A19 | Patient query | Patient query | 2.1 | ? | Patientenanfrage
A20 | Bed status updates | Bed status updates | 2.1 | ? | Änderung des Bettenstatus
A21 | Leave of Absence - Out (leaving) | Leave of Absence - Out (leaving) | 2.1 | ? | Beginn einer Patientenabwesenheit
A22 | Leave of Absence - In (returning) | Leave of Absence - In (returning) | 2.1 | ? | Ende einer Patientenabwesenheit
A23 | Delete a Patient Record | Delete a Patient Record | 2.1 | ? | Löschen eines Patientensatzes
A24 | Link Patient Records | Link Patient Records | 2.1 | ? | Verknüpfen von Patienteninformationen
O01 | Order message | Order message | 2.1 | ? | Auftrag / Verordnung
O02 | Order response | Order response | 2.1 | ? | Ergebnisrückmeldung
P01 | Add and update patient account | Add and update patient account | 2.1 | ? | Hinzufügen und Ändern von Abrechnungsinformationen
P02 | Purge Patient Accounts | Purge Patient Accounts | 2.1 | ? |
P03 | Post detail financial transaction | Post detail financial transaction | 2.1 | ? | Buchung
P04 | Generate bills and A/R statements | Generate bills and A/R statements | 2.1 | ? | Druck und Anzeige von Rechnungen
Q01 | Immediate access | Immediate access | 2.1 | ? | Anfrage mit sofortiger Antwort
Q02 | Deferred Access | Deferred Access | 2.1 | ? | Anfrage mit Zeitversatz
R01 | Unsolicited transmission of requested Observ. | Unsolicited transmission of requested Observ. | 2.1 | ? | unangeforderte Übermittlung eines Befundes
R03 | Display oriented results, query/unsol. update | Display oriented results, query/unsol. update | 2.1 | ? | anzeigeorientiertes Ergebnis