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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

September Release - 9/03/2019

This release of RxNorm is consistent with the 2019AA UMLS Metathesaurus release. For additional information about RxNorm releases, including scripts for loading the RxNorm data into Oracle and MySQL databases, read the RxNorm Technical Documentation.


The following sources with version names in bold have been updated since the previous RxNorm release:

Source NameSABVersion
Vaccines Administered CVX CVX_2019_08_09
DrugBank DRUGBANK DRUGBANK5.0_2019_08_05
Gold Standard Drug Database GS GS_2019_08_14
Multum MediSource Lexicon MMSL MMSL_2019_08_01
Micromedex RED BOOK MMX MMX_2019_08_12
FDA Structured Product Labels MTHSPL MTHSPL_2019_08_27
FDB MedKnowledge (formerly NDDF Plus) NDDF NDDF_2019_08_14
RxNorm normalized names and codes RXNORM RXNORM_19AA_190903F
US Edition of SNOMED CT (drug information) SNOMEDCT_US SNOMEDCT_US_2019_07_31
USP Compendial Nomenclature USP USP_2019_08_19
Veterans Health Administration National Drug File VANDF VANDF_2019_07_31

The following sources have not been updated since the previous RxNorm release:

Source NameSABVersion
Anatomical Therapeutic Chemical Classification System ATC ATC_2019
Medical Subject Headings (MeSH) MSH MSH2019_2019_01_07
CMS Formulary Reference File MTHCMSFRF MTHCMSFRF_2014

*Reminder: As of October 2017, Medi-Span data will not be included in the RxNorm or UMLS releases. If you have questions about Medi-Span, please contact:

Data Changes

USP Sterile Powder for Injection Terms Included

United States Pharmacopeia Compendial Nomenclature (USP) content in RxNorm now includes sterile powder for injection terms. USP was first included in RxNorm using a phased approach beginning with substances, capsules, and tablets. The National Library of Medicine (NLM) is pleased to begin including USP injectable product terms.

Data Counts

Term Type or AttributeNumber
Active GPCKs422
Active BPCKs515
Active SCDs18405
Active SBDs10346
Active RXNORM MINs3817
Active RXNORM INs12346
Active RXNORM PINs2881
Active RXNORM BNs5870
Active RXNORM DFs118
Obsolete GPCKs195
Obsolete BPCKs168
Obsolete SCDs16653
Obsolete SBDs10958
Obsolete RXNORM MINs0
Obsolete RXNORM INs0
Obsolete RXNORM PINs0
Obsolete RXNORM BNs6245
Obsolete RXNORM DFs61
Editor-suppressed SCDs1757
Editor-suppressed SBDs1472
Distinct SAB=RXNORM NDCs249944

Last Reviewed: September 3, 2019