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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

January Release - 01/05/2015

This release of RxNorm is consistent with the 2014AB 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 NameSABDate Updated
Gold Standard Drug Database GS 12/03/2014
Medi-Span Master Drug Data Base MDDB 12/03/2014
Multum MediSource Lexicon MMSL 12/01/2014
Micromedex RED BOOK MMX 12/01/2014
FDA Structured Product Labels MTHSPL 12/22/2014
FDB MedKnowledge (formerly NDDF Plus) NDDF 12/03/2014
Veterans Health Administration National Drug File - Reference Terminology NDFRT 01/05/2015
NDFRT FDASPL relationships NDFRT_FDASPL 01/05/2015
NDFRT FMTSME relationships NDFRT_FMTSME 01/05/2015
Veterans Health Administration National Drug File VANDF 11/26/2014


The following sources have not been updated in this release:

Source NameSABDate Updated
Anatomical Therapeutic Chemical Classification System ATC 2014
Medical Subject Headings (MeSH) MSH 09/08/2014
CMS Formulary Reference File MTHCMSFRF 2014
FDA National Drug Code Directory MTHFDA 06/01/2011
US Edition of SNOMED CT (drug information) SNOMEDCT_US 07/31/2014


Data Changes

There are no significant changes in this release.

Data Counts

Term Type or AttributeNumber
Active GPCKs 366
Active BPCKs 459
Active SCDs 19939
Active SBDs 10967
Active RXNORM MINs 3922
Active RXNORM INs 10327
Active RXNORM PINs 2380
Active RXNORM BNs 6803
Active RXNORM DFs 103
Obsolete GPCKs 125
Obsolete BPCKs 113
Obsolete SCDs 14591
Obsolete SBDs 10460
Obsolete RXNORM MINs 0
Obsolete RXNORM INs 0
Obsolete RXNORM PINs 0
Obsolete RXNORM BNs 9529
Obsolete RXNORM DFs 57
Editor-suppressed SCDs 1127
Editor-suppressed SBDs 983
OCD atoms 333132
Source-asserted NDCs 1332345
Distinct source-asserted NDCs 602815
Distinct SAB=RXNORM NDCs 200940

Last Reviewed: January 5, 2015