HL7 v2.2 Vocabulary
0.2.0 - ci-build

HL7 v2.2 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.2.0 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.v22/ and changes regularly. See the Directory of published versions

CodeSystem: Allow Substitution (2.2 - 1.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/allowSubstitution Version: 1.0.0
Active as of 2026-03-13 Computable Name: AllowSubstitution
Other Identifiers: OID:2.16.840.1.113883.18.79, urn:ietf:rfc:3986#Uniform Resource Identifier (URI)#http://terminology.hl7.org/v2plusvocab/CodeSystem/v2-0161

Copyright/Legal: HL7 Inc., 2026

HL7-defined code system of concepts which specify whether substitutions are allowed and, if so, the type of substitutions allowed. Used in HL7 Version 2.x messaging in the RXO segment.

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

Properties

This code system defines the following properties for its concepts

NameCodeURITypeDescription
version introduced versionIntroduced http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced string version when was this code introduced
version deprecated 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, to suppress IG-publisher warning, to be replaced with standard later 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/allowSubstitution defines the following codes:

CodeDisplayDefinitionversion introducedcomment, to suppress IG-publisher warning, to be replaced with standard latermodifiedDeutsch (German, de)
G Allow generic substitutions Allow generic substitutions 2.2 Substitution durch Generika erlaubt
N Substitutions are NOT authorized Substitutions are not authorized 2.2 This is the default - null. 2025-07-30 Substitution nicht erlaubt
T Allow therapeutic substitutions Allow therapeutic substitutions 2.2 Therapieorientierte Substitution erlaubt