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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

May Release - 05/02/2016

This release of RxNorm is consistent with the 2016AA 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 have been updated since the previous RxNorm release:

Source NameSABVersion
Gold Standard Drug Database GS GS_2016_04_01
Medi-Span Master Drug Data Base MDDB MDDB_2016_03_30
Multum MediSource Lexicon MMSL MMSL_2016_04_01
Micromedex RED BOOK MMX MMX_2016_04_04
Medical Subject Headings (MeSH) MSH MSH2016_2016_02_26
FDA Structured Product Labels MTHSPL MTHSPL_2016_04_22
FDB MedKnowledge (formerly NDDF Plus) NDDF NDDF_2016_04_06
Veterans Health Administration National Drug File - Reference Terminology NDFRT NDFRT_2016_05_02
Veterans Health Administration National Drug File VANDF VANDF_2016_03_30


The following sources have not been updated in this release:

Source NameSABVersion
Anatomical Therapeutic Chemical Classification System ATC ATC_2016
CMS Formulary Reference File MTHCMSFRF MTHCMSFRF_2014
US Edition of SNOMED CT (drug information) SNOMEDCT_US SNOMEDCT_US_2016_01_31

Data Changes

New Dose Forms
RxNorm includes two new dose forms: Topical Liquefied Gas and Vaginal Film. These dose forms occur in a handful of new drugs.

Data Counts

Term Type or AttributeNumber
Active GPCKs367
Active BPCKs409
Active SCDs18759
Active SBDs10639
Active RXNORM MINs3986
Active RXNORM INs10962
Active RXNORM PINs2546
Active RXNORM BNs6380
Active RXNORM DFs116
Obsolete GPCKs146
Obsolete BPCKs132
Obsolete SCDs16284
Obsolete SBDs10167
Obsolete RXNORM MINs0
Obsolete RXNORM INs0
Obsolete RXNORM PINs0
Obsolete RXNORM BNs9476
Obsolete RXNORM DFs54
Editor-suppressed SCDs1493
Editor-suppressed SBDs1316
Source-asserted NDCs1192864
Distinct source-asserted NDCs561490
Distinct SAB=RXNORM NDCs213527

Last Reviewed: May 2, 2016