HL7 Terminology (THO)
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HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This is not an authorized publication; it is the continuous build for version 5.1.0). This version is based on the current content of https://github.com/HL7/UTG/ and changes regularly. See the Directory of published versions

CodeSystem: allowSubstitution

Official URL: http://terminology.hl7.org/CodeSystem/v2-0161 Version: 2.1.0
Active as of 2019-12-01 Responsible: HL7, Inc Computable Name: AllowSubstitution
Other Identifiers: id: urn:oid:2.16.840.1.113883.18.79

Copyright/Legal: Copyright HL7. Licensed under creative commons public domain

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.

Underlying Master Code System for V2 table 0161 (Allow Substitution)

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


This code system defines the following properties for its concepts

statushttp://terminology.hl7.org/CodeSystem/utg-concept-properties#statuscodeStatus of the concept
deprecatedhttp://terminology.hl7.org/CodeSystem/utg-concept-properties#v2-table-deprecatedcodeVersion of HL7 in which the code was deprecated


This code system http://terminology.hl7.org/CodeSystem/v2-0161 defines the following codes:

N Substitutions are NOT authorized. (This is the default - null.)Substitutions are NOT authorized. (This is the default - null.)
G Allow generic substitutions.Allow generic substitutions.
T Allow therapeutic substitutionsAllow therapeutic substitutions

Additional Language Displays

CodeDeutsch (German, de)
NSubstitution nicht erlaubt
GSubstitution durch Generika erlaubt
TTherapieorientierte Substitution erlaubt


2020-05-06reviseTed KleinVocabulary WGMigrated to the UTG maintenance environment and publishing tooling.