← AI resource directorypublic-data-apis

public-data-apis · prepared

NLM RxNorm API boundary

Official-source access, authentication, request-shaping, paging, freshness, legal, and interpretation boundaries for NLM RxNorm API.

version 1.0.0freshness currentobserved 2026-08-28T05:32:38Z

resource.public-data.rxnorm-api
sha256:cdf4298e90fc64475662ff875a2026ec506e9c8127c3568eb2bd5f0b9007fcf8

Open canonical machine JSON →

Evidence-backed facts

  1. The RxNorm API retrieves active, current, and historical drug concepts, identifiers, names, properties, relationships, statuses, and related National Drug Codes from the RxNorm data set. informative
  2. Most RxNorm API use needs no license, while restricted source-vocabulary information can require a UTS API key; public access does not create prescribing, dispensing, endorsement, or clinical authority. informative
  3. Clients must select the exact function, concept scope, identifier or name, search precision, source filters, and JSON or XML representation and account for monthly API and vocabulary updates. informative
  4. A vocabulary match or related NDC is terminology evidence, not proof of product identity, market status, interchangeability, dosage, patient suitability, or a clinical recommendation. informative

Primary sources

RxNorm API

U.S. National Library of Medicine · observed 2026-08-28T05:32:38Z