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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

January Release - 1/07/2019

This release of RxNorm is consistent with the 2018AB 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 with version names in bold have been updated since the previous RxNorm release:

Source NameSABVersion
DrugBank DRUGBANK DRUGBANK5.0_2018_11_29
Gold Standard Drug Database GS GS_2018_11_30
Multum MediSource Lexicon MMSL MMSL_2018_12_01
Micromedex RED BOOK MMX MMX_2018_12_03
FDA Structured Product Labels MTHSPL MTHSPL_2018_12_28
FDB MedKnowledge (formerly NDDF Plus) NDDF NDDF_2018_12_05
RxNorm normalized names and codes RXNORM RXNORM_18AB_190107F
USP Compendial Nomenclature USP USP_2018_12_10
Veterans Health Administration National Drug File VANDF VANDF_2018_11_30

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

Source NameSABVersion
Anatomical Therapeutic Chemical Classification System ATC ATC_2018
Vaccines Administered CVX CVX_2018_10_18
Medical Subject Headings (MeSH) MSH MSH2019_2018_07_31
CMS Formulary Reference File MTHCMSFRF MTHCMSFRF_2014
US Edition of SNOMED CT (drug information) SNOMEDCT_US SNOMEDCT_US_2018_07_31

*Reminder: As of October 2017, Medi-Span data will not be included in the RxNorm or UMLS releases. If you have questions about Medi-Span, please contact:

Data Changes

NDF-RT Removed Beginning 2019
REMINDER: Veterans Health Administration’s National Drug File – Reference Terminology (NDF-RT) has been removed from RxNorm. The January RxNorm release and all future RxNorm releases will not contain NDF-RT.

Medication Reference Terminology (MED-RT) replaces NDF-RT. There are no plans to include MED-RT in RxNorm; however, MED-RT is included in the UMLS Metathesaurus along with RxNorm and its source vocabularies. MED-RT is also included in several RxNorm API resources. For more information about MED-RT, see Introduction to MED-RT as the Replacement for NDF-RT.

Data Counts

Term Type or AttributeNumber
Active GPCKs386
Active BPCKs482
Active SCDs18610
Active SBDs10424
Active RXNORM MINs3990
Active RXNORM INs12145
Active RXNORM PINs2828
Active RXNORM BNs5965
Active RXNORM DFs117
Obsolete GPCKs190
Obsolete BPCKs159
Obsolete SCDs17329
Obsolete SBDs10972
Obsolete RXNORM MINs0
Obsolete RXNORM INs0
Obsolete RXNORM PINs0
Obsolete RXNORM BNs6221
Obsolete RXNORM DFs59
Editor-suppressed SCDs1758
Editor-suppressed SBDs1443
Distinct SAB=RXNORM NDCs251633

Last Reviewed: January 7, 2019