HL7 Terminology (THO)
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HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This guide is not an authorized publication; it is the continuous build for version 7.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/UTG/ and changes regularly. See the Directory of published versions

RxNorm Metadata Record

Metadata Record Information Version 20251031
Maintained By HL7 Terminology Services Management Group (TSMG)
Last Updated Date 31 October 2025
Responsible Organizations U.S. National Library of Medicine (NLM) Roles
  • Code System Owner
  • Code System Maintainer (Steward)
  • Code System Publisher
Website https://www.nlm.nih.gov/
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Code System Names Formal name RxNorm
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Code System Technical Identifiers Identification Record
TSMG-endorsed URI http://www.nlm.nih.gov/research/umls/rxnorm
TSMG-endorsed OID 2.16.840.1.113883.6.88
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Description
RxNorm provides normalized names for clinical drugs and links its names to many of the drug vocabularies commonly used in pharmacy management and drug interaction software, including those of First Databank, Micromedex, and Gold Standard Drug Database. By providing links between these vocabularies, RxNorm can mediate messages between systems not using the same software and vocabulary. RxNorm now includes the United States Pharmacopeia (USP) Compendial Nomenclature from the United States Pharmacopeial Convention. USP is a cumulative data set of all Active Pharmaceutical Ingredients (API).
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Code System Copyright, Intellectual Property and Licensing Copyright Statement
Using RxNorm codes of type SAB=RXNORM as this specification describes does not require a UMLS license. Access to the full set of RxNorm definitions, and/or additional use of other RxNorm structures and information requires a UMLS license. The use of RxNorm in this specification is pursuant to HL7's status as a licensee of the NLM UMLS. HL7's license does not convey the right to use RxNorm to any users of this specification; implementers must acquire a license to use RxNorm in their own right.
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