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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

November Release - 11/01/2010

This release of RxNorm is consistent with the 2010AB 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 10/04/2010
Medi-Span Master Drug Data Base MDDB 10/06/2010
Multum MediSource Lexicon MMSL 10/01/2010
Micromedex DRUGDEX MMX 09/27/2010
FDA Structured Product Labels MTHSPL 10/26/2010
First DataBank NDDF Plus Source Vocabulary NDDF 10/01/2010
Veterans Health Administration National Drug File - Reference Terminology NDFRT 11/01/2010
Veterans Health Administration National Drug File VANDF 09/24/2010

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

Source NameSABDate Updated
Medical Subject Headings (MeSH) MSH 08/17/2009
FDA National Drug Code Directory MTHFDA 09/01/2010
SNOMED Clinical Terms (drug information) SNOMEDCT 07/31/2010

Data Changes

There are no significant data changes for this release.

Data Counts

Term Type or AttributeNumber
Active GPCK forms 292
Active BPCK forms 379
Active SCD forms 19,300
Active SBD forms 15,744
Active RXNORM MIN atoms 3,560
Active RXNORM IN atoms 4,929
Active RXNORM PIN atoms 1,536
Active RXNORM BN atoms 14,146
Active RXNORM DF atoms 100
Obsolete GPCK forms 42
Obsolete BPCK forms 12
Obsolete SCD forms 12,996
Obsolete SBD forms 4,052
Obsolete RXNORM MIN atoms 0
Obsolete RXNORM IN atoms 0
Obsolete RXNORM PIN atoms 0
Obsolete RXNORM BN atoms 0
Obsolete RXNORM DF atoms 55
OCD atoms 265,899
Source-asserted NDC codes 579,503
Distinct Source-asserted NDC codes 347,222
SAB=RXNORM NDC codes 297,129
Distinct SAB=RXNORM NDC codes 297,129

Last Reviewed: November 1, 2010