Official docs outline
6 sections- RxNorm overview
Normalized names and identifiers for clinical drugs.
- Technical documentation
RXNCONSO, RXNREL, RXNSAT file formats.
- Term types
Term types such as IN, SCD, SBD, GPCK and BPCK.
- RxNorm API
REST APIs: findRxcuiByString, getNDCs, getRelatedByType, getInteraction.
- RxClass API
Drug classes such as ATC, VA and EPC.
- RxNorm in FHIR
RxNorm code system use in MedicationRequest.
Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.