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: What subject filter (2.4 - 1.4.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter | Version: 1.4.0
Active as of 2026-01-27 | Computable Name: WhatSubjectFilter
Other Identifiers: OID:2.16.840.1.113883.18.20
Copyright/Legal: HL7 Inc., 2026

HL7-defined code system of concepts which specify the kind of information that is required to satisfy a query request. The values define the type of transaction inquiry. Used in HL7 Version 2 messaging in the URD segment.

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

- Hl7VSwhatSubjectFilter

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/whatSubjectFilter` defines the following codes:

Code | Display | Definition | versionIntroduced | Deutsch (German, de)
ADV | Advice/diagnosis | Advice/diagnosis | 2.1 | Ratschlag / Diagnose
ANU | Nursing unit lookup (returns patients in beds, excluding empty beds) | Nursing unit lookup (returns patients in beds, excluding empty beds) | 2.1 | Stationsinformation (ohne freie Betten)
APA | Account number query, return matching visit | Account number query, return matching visit | 2.2 | Fälle zu angefragter Rechnungsnummer
APM | Medical record number query, returns visits for a medical record number | Medical record number query, returns visits for a medical record number | 2.2 | Fälle zu angefragter Krankenaktennummer
APN | Patient name lookup | Patient name lookup | 2.1 | Patientendaten zu gegebenem Patientennamen
APP | Physician lookup | Physician lookup | 2.2 | Patienten des spezifizierten Arztes
ARN | Nursing unit lookup (returns patients in beds, including empty beds) | Nursing unit lookup (returns patients in beds, including empty beds) | 2.2 | Stationsinformation (einschließlich freier Betten)
CAN | Cancel. Used to cancel a query | Cancel. Used to cancel a query | 2.1 | Anfrage stornieren
DEM | Demographics | Demographics | 2.1 | Demographische Daten
FIN | Financial | Financial | 2.2 | Finanzdaten
GID | Generate new identifier | Generate new identifier | 2.4 |
GOL | Goals | Goals | 2.3 | Ziele
MRI | Most recent inpatient | Most recent inpatient | 2.1 | Letzter stationärer Patient
MRO | Most recent outpatient | Most recent outpatient | 2.1 | Letzter ambulanter Patient
NCK | Network clock | Network clock | 2.2 | Netzwerk-Uhrzeit
NSC | Network status change | Network status change | 2.2 | Änderung des Netzwerkstatus
NST | Network statistic | Network statistic | 2.2 | Netzwerkstatistik
ORD | Order | Order | 2.2 | Auftrag / Verordnung
OTH | Other | Other | 2.1 | anderes
PRB | Problems | Problems | 2.3 | Probleme
PRO | Procedure | Procedure | 2.1 | Prozedur
RAR | Pharmacy administration information | Pharmacy administration information | 2.2 | Erfolgte Verabreichung von Medikamenten
RDR | Pharmacy dispense information | Pharmacy dispense information | 2.2 | Abgabe von Medikamenten
RER | Pharmacy encoded order information | Pharmacy encoded order information | 2.2 | Medikamentenverordnung (Apotheke)
RES | Result | Result | 2.1 | Ergebnis / Befund
RGR | Pharmacy give information | Pharmacy give information | 2.2 | Verabreichunsgsvorschrift für Medikamente
ROR | Pharmacy prescription information | Pharmacy prescription information | 2.2 | Medikamentenverordnung
SAL | All schedule related information, including open slots, booked slots, blocked slots | All schedule related information, including open slots, booked slots, blocked slots | 2.3.1 |
SBK | Booked slots on the identified schedule | Booked slots on the identified schedule | 2.3.1 |
SBL | Blocked slots on the identified schedule | Blocked slots on the identified schedule | 2.3.1 |
SOF | First open slot on the identified schedule after the start date/time | First open slot on the identified schedule after the start date/time | 2.4 |
SOP | Open slots on the identified schedule | Open slots on the identified schedule | 2.3.1 |
SSA | Time slots available for a single appointment | Time slots available for a single appointment | 2.3.1 |
SSR | Time slots available for a recurring appointment | Time slots available for a recurring appointment | 2.3.1 |
STA | Status | Status | 2.1 | Status
VXI | Vaccine Information | Vaccine Information | 2.3 | Impfinformation
XID | Get cross-referenced identifiers | Get cross-referenced identifiers | 2.4 |