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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

August Release - 08/02/2010

This release of RxNorm is consistent with the 2010AA UMLS Metathesaurus release. For additional information about RxNorm releases, including scripts for loading the RxNorm data into Oracle and MySQL databases, read the RxNorm Documentation.


The following sources have been updated since the previous RxNorm release:

Source NameSABDate Updated
Gold Standard Alchemy GS 07/06/2010
Medi-Span Master Drug Data Base MDDB 07/07/2010
Multum MediSource Lexicon MMSL 07/01/2010
Micromedex DRUGDEX MMX 07/06/2010
FDA National Drug Code Directory MTHFDA 07/01/2010
FDA Structured Product Labels MTHSPL 07/26/2010
First DataBank NDDF Plus Source Vocabulary NDDF 07/09/2010
Veterans Health Administration National Drug File - Reference Terminology NDFRT 08/02/2010
Veterans Health Administration National Drug File VANDF 06/17/2010

The following sources have not been updated since the previous RxNorm release:

Source NameSABDate Updated
Medical Subject Headings (MeSH) MSH 08/17/2009
SNOMED Clinical Terms (drug information) SNOMED CT 01/31/2010

Data Changes

There are no significant data changes for this release.

Data Counts

Term Type or AttributeNumber
Active GPCK forms 286
Active BPCK forms 366
Active SCD forms 18,951
Active SBD forms 15,675
Active RXNORM IN atoms 4,880
Active RXNORM PIN atoms 1,529
Active RXNORM BN atoms 13,928
Active RXNORM DF atoms 100
Obsolete GPCK forms 38
Obsolete BPCK forms 13
Obsolete SCD forms 12,888
Obsolete SBD forms 3,979
Obsolete RXNORM IN atoms 0
Obsolete RXNORM PIN atoms 0
Obsolete RXNORM BN atoms 0
Obsolete RXNORM DF atoms 55
OCD atoms 262,931
Source-asserted NDC codes 563,973
Distinct Source-asserted NDC codes 343,819
SAB=RXNORM NDC codes 291,303
Distinct SAB=RXNORM NDC codes 291,303

Last Reviewed: August 2, 2010