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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

February Release - 2/05/2018

This release of RxNorm is consistent with the 2017AB 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 source versions in bold have been updated since the previous RxNorm release:

Source NameSABVersion
Anatomical Therapeutic Chemical Classification System ATC ATC_2018
Vaccines Administered CVX CVX_2018_01_18
DrugBank DRUGBANK DRUGBANK5.0_2018_01_03
Gold Standard Drug Database GS GS_2018_01_02
Multum MediSource Lexicon MMSL MMSL_2018_01_01
Micromedex RED BOOK MMX MMX_2018_01_01
Medical Subject Headings (MeSH) MSH MSH2018_2017_08_11
CMS Formulary Reference File MTHCMSFRF MTHCMSFRF_2014
FDA Structured Product Labels MTHSPL MTHSPL_2018_01_25
FDB MedKnowledge (formerly NDDF Plus) NDDF NDDF_2018_01_03
Veterans Health Administration National Drug File - Reference Terminology NDFRT NDFRT_2018_02_05
US Edition of SNOMED CT (drug information) SNOMEDCT_US SNOMEDCT_US_2017_07_31
Veterans Health Administration National Drug File VANDF VANDF_2017_12_27

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

Data Changes


The February full monthly release of RxNorm contains the last expected version of the Veterans Health Administration’s (VHA) National Drug File-Reference Terminology (NDF-RT).

The new Medication Reference Terminology (MED-RT) will be the evolutionary successor to the VHA’s NDF-RT. Both are formal ontological representations of medication terminology, pharmacologic classifications, and asserted authoritative relationships between them.

The VHA plans to cease publication of NDF-RT and begin releasing MED-RT in its place in the first quarter of 2018, with the anticipated first release of MED-RT to be March 5th. The last release of NDF-RT is planned to be February 2018 which will be in the February RxNorm release and will remain in the RxNorm full monthly releases for at least six months. There are no plans to include MED-RT in RxNorm; however, MED-RT will be included in the UMLS Metathesaurus along with RxNorm and its source vocabularies.

In preparation for the planned upcoming release of MED-RT on March 5th, three MED-RT webinars or training videos have been created by J P Systems, Inc. This series of webinars is intended to help NDF-RT users make the transition to MED-RT.

Here are the links (YouTube) to the three MED-RT Webinars:

  1. Medication Reference Terminology (MED-RT) Overview Webinar
  2. Medication Reference Terminology Concept Types and Relationships Webinar
  3. Navigating MED-RT Webinar

If there are any questions about the webinars, please email

Data Counts

Term Type or AttributeNumber
Active GPCKs379
Active BPCKs451
Active SCDs18432
Active SBDs10419
Active RXNORM MINs3970
Active RXNORM INs11636
Active RXNORM PINs2733
Active RXNORM BNs6052
Active RXNORM DFs116
Obsolete GPCKs167
Obsolete BPCKs143
Obsolete SCDs16820
Obsolete SBDs10689
Obsolete RXNORM MINs0
Obsolete RXNORM INs0
Obsolete RXNORM PINs0
Obsolete RXNORM BNs10025
Obsolete RXNORM DFs59
Editor-suppressed SCDs1736
Editor-suppressed SBDs1394
Distinct SAB=RXNORM NDCs237189

Last Reviewed: February 5, 2018