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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

February Release - 2/03/2020

This full release of RxNorm is consistent with the 2019AB 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
Anatomical Therapeutic Chemical Classification System ATC ATC_2020
DrugBank DRUGBANK DRUGBANK5.0_2020_01_03
Gold Standard Drug Database GS GS_2020_01_13
Multum MediSource Lexicon MMSL MMSL_2020_01_01
Micromedex RED BOOK MMX MMX_2020_01_13
FDA Structured Product Labels MTHSPL MTHSPL_2020_01_24
FDB MedKnowledge (formerly NDDF Plus) NDDF NDDF_2020_01_15
RxNorm normalized names and codes RXNORM RXNORM_19AB_200203F
USP Compendial Nomenclature USP USP_2020_01_15
Veterans Health Administration National Drug File VANDF VANDF_2019_12_30

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

Source NameSABVersion
Vaccines Administered CVX CVX_2019_12_16
Medical Subject Headings (MeSH) MSH MSH2020_2019_08_27
CMS Formulary Reference File MTHCMSFRF MTHCMSFRF_2014
US Edition of SNOMED CT (drug information) SNOMEDCT_US SNOMEDCT_US_2019_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

Dose Form Changes

Two new dose forms are now available in RxNorm. The new dose forms are: Chewable Extended Release Oral Tablet and Sublingual Film. Also, the dose form Oral Strip has changed to Oral Film. RxNorm names with the Oral Strip dose form have been changed to Oral Film.

Data Counts

Term Type or AttributeNumber
Active GPCKs417
Active BPCKs504
Active SCDs18613
Active SBDs10221
Active RXNORM MINs3809
Active RXNORM INs12460
Active RXNORM PINs2932
Active RXNORM BNs5760
Active RXNORM DFs119
Obsolete GPCKs208
Obsolete BPCKs184
Obsolete SCDs16507
Obsolete SBDs10953
Obsolete RXNORM MINs0
Obsolete RXNORM INs0
Obsolete RXNORM PINs0
Obsolete RXNORM BNs6248
Obsolete RXNORM DFs62
Editor-suppressed SCDs1782
Editor-suppressed SBDs1489
Distinct SAB=RXNORM NDCs248625

Last Reviewed: February 3, 2020