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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

January Release - 01/04/2010

This release of RxNorm is consistent with the 2009AB 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 12/07/2009
Medi-Span Master Drug Data Base MDDB 12/09/2009
Multum MediSource Lexicon MMSL 12/01/2009
Micromedex DRUGDEX MMX 11/30/2009
FDA National Drug Code Directory MTHFDA 11/30/2009
FDA Structured Product Labels MTHSPL 12/24/2009
First DataBank NDDF Plus Source Vocabulary NDDF 12/04/2009
Veterans Health Administration National Drug File VANDF 11/30/2009

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 07/31/2009

Data Changes

Human/Veterinarian Attributes:

Attributes have been added to RxNorm BPCK, GPCK, SBD, SCD, and BN normal forms to represent the intended subject - human or veterinarian - of a drug product, and the country in which that drug is marketed for that purpose.  These new attributes can be found in the RXNSAT file in the RxNorm full monthly release.

The new attribute names are RXN_HUMAN_DRUG and RXN_VET_DRUG. The values of these attributes are drawn from ISO country codes (for example: RXN_HUMAN_DRUG=US or RXN_VET_DRUG=UK) indicating the country where, to the best of our knowledge, the drug is marketed.  Concepts with BPCK, GPCK, SBD, SCD, and BN normal forms have received the attribute-value pair of RXN_HUMAN_DRUG=US by default.  The initial focus is on US and UK attribute values. 

Data Counts

Term Type or AttributeNumber
Active GPCK forms 265
Active BPCK forms 337
Active SCD forms 18,150
Active SBD forms 15,351
Active RXNORM IN atoms 3,055
Active RXNORM PIN atoms 1,227
Active RXNORM BN atoms 9,914
Active RXNORM DF atoms 101
Obsolete GPCK forms 28
Obsolete BPCK forms 14
Obsolete SCD forms 12,320
Obsolete SBD forms 4,009
Obsolete RXNORM IN atoms 1,499
Obsolete RXNORM PIN atoms 289
Obsolete RXNORM BN atoms 3,505
Obsolete RXNORM DF atoms 54
OCD atoms 255,667
Source-asserted NDC codes 530,291
Distinct Source-asserted NDC codes 335,093
SAB=RXNORM NDC codes 276,785
Distinct SAB=RXNORM NDC codes 276,785

Last Reviewed: February 7, 2011