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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

December Release - 12/01/2014

This release of RxNorm is consistent with the 2014AB 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 11/04/2014
Medi-Span Master Drug Data Base MDDB 11/05/2014
Multum MediSource Lexicon MMSL 11/01/2014
Micromedex RED BOOK MMX 11/11/2014
CMS Formulary Reference File MTHCMSFRF 2014
FDA Structured Product Labels MTHSPL 11/26/2014
FDB MedKnowledge (formerly NDDF Plus) NDDF 11/05/2014
Veterans Health Administration National Drug File VANDF 10/17/2014


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 09/08/2014
FDA National Drug Code Directory MTHFDA 06/01/2011
Veterans Health Administration National Drug File - Reference Terminology NDFRT 11/03/2014
NDFRT FDASPL relationships NDFRT_FDASPL 11/03/2014
NDFRT FMTSME relationships NDFRT_FMTSME 11/03/2014
US Edition of SNOMED CT (drug information) SNOMEDCT_US 07/31/2014


Data Changes

RxNorm now includes a new source - Centers for Medicare and Medicaid Services Formulary Reference File (SAB=MTHCMSFRF). The Formulary Reference File (FRF) is a listing of drugs that Centers for Medicare & Medicaid Services (CMS) Part D plan sponsors must utilize in the submission of Part D formularies to the CMS for review. RxNorm only includes a small subset (less than 10 terms) of the full FRF. For more information on the CMS FRF, visit the CMS Formulary Guidance page.

This release also includes additional prescribable names (TTY=PSN) for many drugs with otic and ophthalmic solution and suspension dose forms, among others.

Data Counts

Term Type or AttributeNumber
Active GPCKs 367
Active BPCKs 460
Active SCDs 19896
Active SBDs 10932
Active RXNORM MINs 3913
Active RXNORM INs 10277
Active RXNORM PINs 2377
Active RXNORM BNs 6791
Active RXNORM DFs 103
Obsolete GPCKs 123
Obsolete BPCKs 110
Obsolete SCDs 14584
Obsolete SBDs 10448
Obsolete RXNORM MINs 0
Obsolete RXNORM INs 0
Obsolete RXNORM PINs 0
Obsolete RXNORM BNs 9521
Obsolete RXNORM DFs 57
Editor-suppressed SCDs 1106
Editor-suppressed SBDs 960
OCD atoms 332744
Source-asserted NDCs 1327906
Distinct source-asserted NDCs 600203
Distinct SAB=RXNORM NDCs 199588

Last Reviewed: January 5, 2015