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Unified Medical Language System® (UMLS®)

RxNorm Release Notes

April Release - 04/04/2022

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_2022
Vaccines Administered CVX CVX_2022_02_14
DrugBank DRUGBANK DRUGBANK5.0_2022_03_03
Gold Standard Drug Database GS GS_2022_03_09
Multum MediSource Lexicon MMSL MMSL_2022_03_01
Micromedex RED BOOK MMX MMX_2022_03_07
FDA Structured Product Labels MTHSPL MTHSPL_2022_03_25
FDB MedKnowledge (formerly NDDF Plus) NDDF NDDF_2022_03_09
RxNorm normalized names and codes RXNORM RXNORM_20AA_220404F
US Edition of SNOMED CT (drug information) SNOMEDCT_US SNOMEDCT_US_2022_01_31
USP Compendial Nomenclature USP USP_2022_2_15
Veterans Health Administration National Drug File VANDF VANDF_2022_02_28

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

Source NameSABVersion
Medical Subject Headings (MeSH) MSH MSH2022_2021_07_20
CMS Formulary Reference File MTHCMSFRF MTHCMSFRF_2020

*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:

RxNorm Data Changes

No major changes to report for the RxNorm April 2022 release.

Related News

Did you know that the getNDCStatus function was improved in the RxNorm API and RxMix to allow retrieval of alternate packaging and non-RxNorm NDCs? Get more updates about RxNav and its related tools from the RxNav landing page.

Data Counts

Term Type or AttributeNumber
Active GPCKs459
Active BPCKs535
Active SCDs17123
Active SBDs9432
Active RXNORM MINs3769
Active RXNORM INs13756
Active RXNORM PINs3261
Active RXNORM BNs5091
Active RXNORM DFs121
Obsolete GPCKs248
Obsolete BPCKs215
Obsolete SCDs18682
Obsolete SBDs11139
Obsolete RXNORM MINs0
Obsolete RXNORM INs0
Obsolete RXNORM PINs0
Obsolete RXNORM BNs6287
Obsolete RXNORM DFs63
Editor-suppressed SCDs1877
Editor-suppressed SBDs1549
Distinct SAB=RXNORM NDCs241102

Last Reviewed: April 4, 2022