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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

April Release - 04/03/2017

This release of RxNorm is consistent with the 2016AB 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 NameSABVersion
Vaccines Administered CVX CVX_2017_03_03
DrugBank DRUGBANK DRUGBANK5.0_2017_03_09
Gold Standard Drug Database GS GS_2017_03_13
Medi-Span Master Drug Data Base MDDB MDDB_2017_03_08
Multum MediSource Lexicon MMSL MMSL_2017_03_01
Micromedex RED BOOK MMX MMX_2017_03_13
FDA Structured Product Labels MTHSPL MTHSPL_2017_03_27
FDB MedKnowledge (formerly NDDF Plus) NDDF NDDF_2017_03_08
Veterans Health Administration National Drug File - Reference Terminology NDFRT NDFRT_2017_04_03
Veterans Health Administration National Drug File VANDF VANDF_2017_02_16


The following sources have not been updated in this release:

Source NameSABVersion
Anatomical Therapeutic Chemical Classification System ATC ATC_2017
CMS Formulary Reference File MTHCMSFRF MTHCMSFRF_2014
Medical Subject Headings (MeSH) MSH MSH2017_2016_08_12
US Edition of SNOMED CT (drug information) SNOMEDCT_US SNOMEDCT_US_2017_01_31

Data Changes

The National Library of Medicine (NLM) is delighted to announce that the April 2017 RxNorm monthly release contains Prescribable Names (TTY=PSN) for all RxNorm normal forms for active human drugs sold in the United States (US) with a few exceptions. Drugs without PSNs include allergenic extracts and certain forms containing three or more ingredients. Prescribable names are user-friendly synonyms of RxNorm SCD/SBD/GPCK/BPCK concepts and are meant to be used as display names in e-prescribing systems. Unlike other RxNorm synonyms (TTY=SY and TTY=TMSY), there can only be a single prescribable name associated with an RxNorm concept (i.e., RXCUI). RxNorm editors create prescribable names based upon the drug packaging in the Structured Product Labels (SPLs) on DailyMed ( Prescribable names may contain common ingredient abbreviations and tall man lettering, and their strengths may not be normalized as they are in the SCD/SBD/GPCK/BPCK names.

PSNs were first introduced in the July 2014 release of RxNorm. NLM would like to thank the US Department of Veterans Affairs, Veterans Health Administration (VHA) for help with funding this project, and the National Council For Prescription Drug Programs (NCPDP) for help with organizing content discussions with stakeholders. The addition of prescribable names to RxNorm is a major step towards improving the efficiency and accuracy of drug information management in e-prescribing systems.

Data Counts

Term Type or AttributeNumber
Active GPCKs370
Active BPCKs433
Active SCDs18745
Active SBDs10461
Active RXNORM MINs3957
Active RXNORM INs11323
Active RXNORM PINs2645
Active RXNORM BNs6115
Active RXNORM DFs116
Obsolete GPCKs156
Obsolete BPCKs133
Obsolete SCDs16222
Obsolete SBDs10317
Obsolete RXNORM MINs0
Obsolete RXNORM INs0
Obsolete RXNORM PINs0
Obsolete RXNORM BNs9825
Obsolete RXNORM DFs59
Editor-suppressed SCDs1676
Editor-suppressed SBDs1333
Source-asserted NDCs1255822
Distinct source-asserted NDCs594035
Distinct SAB=RXNORM NDCs225743