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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

June Release - 06/02/2014

This release of RxNorm is consistent with the 2014AA 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 05/05/2014
Medi-Span Master Drug Data Base MDDB 05/07/2014
Multum MediSource Lexicon MMSL 05/01/2014
Micromedex RED BOOK MMX 05/05/2014
FDA Structured Product Labels MTHSPL 05/28/2014
FDB MedKnowledge (formerly NDDF Plus) NDDF 05/07/2014
Veterans Health Administration National Drug File - Reference Terminology NDFRT 06/02/2014
NDFRT FDASPL relationships NDFRT_FDASPL 06/02/2014
NDFRT FMTSME relationships NDFRT_FMTSME 06/02/2014
Veterans Health Administration National Drug File VANDF 04/21/2014


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 02/10/2014
FDA National Drug Code Directory MTHFDA 06/01/2011
US Edition of SNOMED CT (drug information) SNOMEDCT_US 01/31/2014

Data Changes

Two dose forms have changed for the June release. Enteric Coated Capsule is now Delayed Release Oral Capsule, and Enteric Coated Tablet is now Delayed Release Oral Tablet. Concepts using the old dose forms have been updated with the new dose forms. RXAUIs for these terms have changed, but their RXCUIs remain unchanged.

Effervescent Oral Tablet was added as a dose form. This dose form is defined as: a solid dosage form containing mixtures of acids (e.g., citric acid, tartaric acid) and sodium bicarbonate, which release carbon dioxide when dissolved in water; it is intended to be dissolved or dispersed in water before oral administration.

Data Counts

Term Type or AttributeNumber
Active GPCKs 19719
Active BPCKs 10899
Active SCDs 352
Active SBDs 434
Active RXNORM MINs 3887
Active RXNORM INs 9776
Active RXNORM PINs 2271
Active RXNORM BNs 6797
Active RXNORM DFs 102
Obsolete GPCKs 14499
Obsolete BPCKs 10321
Obsolete SCDs 119
Obsolete SBDs 111
Obsolete RXNORM MINs 0
Obsolete RXNORM INs 0
Obsolete RXNORM PINs 0
Obsolete RXNORM BNs 9318
Obsolete RXNORM DFs 53
Editor-suppressed SCDs 1070
Editor-suppressed SBDs 939
OCD atoms 328774
Source-asserted NDCs 1294409
Distinct source-asserted NDCs 584250
Distinct SAB=RXNORM NDCs 201110

Last Reviewed: June 2, 2014