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RxNorm Release Notes - May 4, 2026

Sources

The following sources have been updated since the previous RxNorm release:

Source Name SAB Version
Vaccines Administered CVX CVX_2026_04_21
DrugBank DRUGBANK DRUGBANK5.0_2026_04_01
Gold Standard Drug Database GS GS_2026_04_10
Oracle Health Multum Drug Database MMSL MMSL_2026_04_01
Micromedex RED BOOK MMX MMX_2026_04_03
Metathesaurus FDA Structured Product Labels MTHSPL MTHSPL_2026_04_25
FDB MedKnowledge (formerly NDDF Plus) NDDF NDDF_2026_04_08
RxNorm Vocabulary RXNORM RXNORM_20AA_260504F
Veterans Health Administration National Drug File VANDF VANDF_2026_03_31

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

Source Name SAB Version
Anatomical Therapeutic Chemical Classification System ATC ATC_2026
Metathesaurus CMS Formulary Reference File MTHCMSFRF MTHCMSFRF_2020
US Edition of SNOMED CT SNOMEDCT_US SNOMEDCT_US_2026_01_31
USP Compendial Nomenclature USP USP_2026_02_24

RxNorm Data Changes

No major changes.

Data Counts

Term Type or Attribute Number
Active RXNORM GPCKs 648
Active RXNORM BPCKs 741
Active RXNORM SCDs 17547
Active RXNORM SBDs 9681
Active RXNORM MINs 3832
Active RXNORM INs 14632
Active RXNORM PINs 3634
Active RXNORM BNs 5101
Active RXNORM DFs 126
Obsolete RXNORM GPCKs 270
Obsolete RXNORM BPCKs 265
Obsolete RXNORM SCDs 20230
Obsolete RXNORM SBDs 12498
Obsolete RXNORM MINs 0
Obsolete RXNORM INs 0
Obsolete RXNORM PINs 0
Obsolete RXNORM BNs 6765
Obsolete RXNORM DFs 65
Editor-suppressed RXNORM SCDs 2163
Editor-suppressed RXNORM SBDs 1805
SAB=RXNORM NDCs 247925
Distinct SAB=RXNORM NDCs 247925

Last Reviewed: May 4, 2026