Data element name

Sub data element name


Code System Owner


National Library of Medicine

Email address
Phone number
Address8600 Rockville Pike
Bethesda, MD 20894
Code System Maintainer (Steward)NameNational Library of Medicine
Phone number
Address8600 Rockville Pike
Bethesda, MD 20894
Code System PublisherNameNational Library of Medicine
Phone number
Address8600 Rockville Pike
Bethesda, MD 20894
Code System NamesFormal name of the code systemRxNorm
Short name of the code systemRxNorm
Code System Technical IdentifiersHTA-endorsed URI
HTA-endorsed OID2.16.840.1.113883.6.88
Other URIs
Other OIDs
Code System InformationLink

"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. By providing links between these vocabularies, RxNorm can mediate messages between systems not using the same software and vocabulary."

RxNorm can be downloaded from here:

RxNorm can be browsed here:

RxNorm API:

Arrangement or agreements with HL7 for use of content
Version management

Suggestions for changes to RxNorm can be made here:

RxNorm is released monthly using the RXNORM_20AA_YYMMDDF format. (Example: RXNORM_20AA_210405F)

RxNorm is updated every Wednesday with newly-approved drug information from the MTHSPL (DailyMed) source vocabulary.

Code System Copyright, Intellectual Property and LicensingCopyright Statement"Attribution and Rights for Government Works:  Works produced by the U.S. government are not subject to copyright protection in the United States. Any such works found on National Library of Medicine (NLM) Web sites may be freely used or reproduced without permission in the U.S. Please acknowledge NLM as the source of the information by including the phrase “Courtesy of the U.S. National Library of Medicine” or “Source: U.S. National Library of Medicine.”

Copyright Protections for Non-Government Works: When using NLM Web sites, you may encounter documents, illustrations, photographs, or other content contributed by or licensed from private individuals, companies, or organizations that may be protected by U.S. and international copyright laws. You can sometimes tell if content is copyrighted if it has the copyright symbol, the name of the copyright holder, or the statement "All rights reserved." However, a copyright notice is not required by law and therefore not all copyrighted content is necessarily marked in this way.

Transmission or reproduction of copyrighted items (beyond that allowed by fair use as defined in the U.S. copyright laws) requires the written permission of the copyright holders."

Copyright InformationNLM's complete copyright Statement can be found here
Intellectual Property Information
Licensing Information

You must have a UMLS Terminology Services (UTS) account to access the RxNorm release files. NLM does not charge for licensing RxNorm; however, the use of some non-SAB=RXNORM data (Gold Standard, Multum, etc.) may require additional licensing from those source providers. Read the UMLS Metathesaurus License Agreement for more information. Visit the UTS to sign up for an account.

RxNorm Release files

You can download RxNorm as a zip file from the RxNorm Files page. The zip file contains the RxNorm RRF data files, a README file, and MySQL and Oracle database load scripts. The zip file also includes the Current Prescribable Content subset.

RxNorm Current Prescribable Content subset

You can download a subset of currently prescribable drugs found in RxNorm from the RxNorm Files page. The subset only includes SAB=RXNORM and SAB=MTHSPL data. You do not need a license to download this subset.
HTA endorsement statusValueReady for Production Use
Assignment date20210514
HTA review statusLast review date20210514
Next review date
Information current as at (date)
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