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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

November Release - 11/03/2014

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 10/02/2014
Medi-Span Master Drug Data Base MDDB 10/01/2014
Multum MediSource Lexicon MMSL 10/01/2014
Micromedex RED BOOK MMX 09/29/2014
Medical Subject Headings (MeSH) MSH 09/08/2014
FDA Structured Product Labels MTHSPL 10/28/2014
FDB MedKnowledge (formerly NDDF Plus) NDDF 10/08/2014
Veterans Health Administration National Drug File - Reference Terminology NDFRT 11/03/2014
NDFRT FDASPL relationships NDFRT_FDASPL 11/03/2014
NDFRT FMTSME relationships NDFRT_FMTSME 11/03/2014
Veterans Health Administration National Drug File VANDF 09/18/2014


The following sources have not been updated in this release:

Source NameSABDate Updated
Anatomical Therapeutic Chemical Classification System ATC 2014
FDA National Drug Code Directory MTHFDA 06/01/2011
US Edition of SNOMED CT (drug information) SNOMEDCT_US 07/31/2014


Data Changes

This release does not include any significant data changes.

Data Counts

Term Type or AttributeNumber
Active GPCKs 366
Active BPCKs 458
Active SCDs 19855
Active SBDs 10900
Active RXNORM MINs 3907
Active RXNORM INs 10231
Active RXNORM PINs 2362
Active RXNORM BNs 6771
Active RXNORM DFs 103
Obsolete GPCKs 122
Obsolete BPCKs 109
Obsolete SCDs 14593
Obsolete SBDs 10433
Obsolete RXNORM MINs 0
Obsolete RXNORM INs 0
Obsolete RXNORM PINs 0
Obsolete RXNORM BNs 9515
Obsolete RXNORM DFs 57
Editor-suppressed SCDs 1092
Editor-suppressed SBDs 956
OCD atoms 331430
Source-asserted NDCs 1322841
Distinct source-asserted NDCs 598193
Distinct SAB=RXNORM NDCs 198527

Last Reviewed: January 5, 2015