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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

July Release - 07/01/2013

This release of RxNorm is consistent with the 2013AA 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 05/31/2013
Medi-Span Master Drug Data Base MDDB 05/29/2013
Multum MediSource Lexicon MMSL 06/01/2013
Micromedex RED BOOK MMX 06/03/2013
FDA Structured Product Labels MTHSPL 06/24/2013
FDB MedKnowledge (formerly NDDF Plus) NDDF 06/05/2013
Veterans Health Administration National Drug File - Reference Terminology NDFRT 07/01/2013
Veterans Health Administration National Drug File VANDF 06/03/2013


The following sources have not been updated in this release:

Source NameSABDate Updated
Medical Subject Headings (MeSH) MSH 01/21/2013
FDA National Drug Code Directory MTHFDA 06/01/2011
SNOMED Clinical Terms (drug information) SNOMEDCT 01/31/2013

Data Changes

There are no significant data changes in this release.

Data Counts

Term Type or AttributeNumber
Active GPCK forms 334
Active BPCK forms 408
Active SCD forms 20,027
Active SBD forms 10,976
Active RXNORM MIN atoms 3,839
Active RXNORM IN atoms 9,024
Active RXNORM PIN atoms 2,162
Active RXNORM BN atoms 6,910
Active RXNORM DF atoms 104
Obsolete GPCK forms 116
Obsolete BPCK forms 93
Obsolete SCD forms 13,777
Obsolete SBD forms 9,563
Obsolete RXNORM MIN atoms 0
Obsolete RXNORM IN atoms 0
Obsolete RXNORM PIN atoms 0
Obsolete RXNORM BN atoms 8,727
Obsolete RXNORM DF atoms 51
Editor-suppressed SCD forms 1,084
Editor-suppressed SBD forms 894
OCD atoms 310,962
Source-asserted NDC codes 1,239,075
Distinct Source-asserted NDC codes 555,827
SAB=RXNORM NDC codes 195,872
Distinct SAB=RXNORM NDC codes 195,872

Last Reviewed: July 1, 2013