RxNorm Extension

OMOP RxNorm Extension

RxNorm Extension 2026-01-142,171,452 concepts
Standard
1,865,487
Classification
0
Active
1,944,466
Invalid
226,986

Domain distribution

Drug
1,944,466

Get OMOP RxNorm Extension via the API

Query every concept in this vocabulary over HTTPS, against the current release. No downloads, no local database.

curl "https://api.omophub.com/v1/vocabularies/RxNorm Extension" \
  -H "Authorization: Bearer $OMOPHUB_API_KEY"
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