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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

March Release - 03/03/2014

This release of RxNorm is consistent with the 2013AB 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 02/06/2014
Medi-Span Master Drug Data Base MDDB 01/29/2014
Multum MediSource Lexicon MMSL 02/03/2014
Micromedex RED BOOK MMX 02/03/2014
FDA Structured Product Labels MTHSPL 02/24/2014
FDB MedKnowledge (formerly NDDF Plus) NDDF 02/05/2014
US Edition of SNOMED CT (drug information) SNOMEDCT_US 01/31/2014
Veterans Health Administration National Drug File VANDF 01/23/2014


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 08/19/2013
FDA National Drug Code Directory MTHFDA 06/01/2011
Veterans Health Administration National Drug File - Reference Terminology NDFRT 02/03/2014

Data Changes

There are no significant data changes in this release.

Data Counts

Term Type or AttributeNumber
Active GPCK forms 337
Active BPCK forms 418
Active SCD forms 20300
Active SBD forms 10771
Active RXNORM MIN atoms 3880
Active RXNORM IN atoms 9584
Active RXNORM PIN atoms 2244
Active RXNORM BN atoms 6729
Active RXNORM DF atoms 105
Obsolete GPCK forms 128
Obsolete BPCK forms 108
Obsolete SCD forms 13880
Obsolete SBD forms 10277
Obsolete RXNORM MIN atoms 0
Obsolete RXNORM IN atoms 0
Obsolete RXNORM PIN atoms 0
Obsolete RXNORM BN atoms 9258
Obsolete RXNORM DF atoms 51
Editor-suppressed SCD forms 1133
Editor-suppressed SBD forms 917
OCD atoms 326889
Source-asserted NDC codes 1279163
Distinct Source-asserted NDC codes 577022
SAB=RXNORM NDC codes 198263
Distinct SAB=RXNORM NDC codes 198263

Last Reviewed: March 3, 2014