# fourzerotwo-si Rxnorm API

**Canonical:** https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-rxnorm-api/  
**Provider:** fourzerotwo-si — https://apis.io/providers/fourzerotwo-si/  
**Base URL:** https://fourzerotwo.si  
**Documentation:** https://fourzerotwo.si

fourzerotwo-si Rxnorm API is one of 67 APIs that [fourzerotwo-si](https://apis.io/providers/fourzerotwo-si/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include rxnorm. The published artifact set on APIs.io includes an OpenAPI specification.

RxNorm Drug Names: Normalise US drug names: name or misspelling to RxCUI, clinical and branded drugs, ingredients and brands, NDC lookups and concept properties.

## Operations (8)

| Method | Path | Summary |
|---|---|---|
| GET | `/v1/rxnorm/rxcui` | RxNorm Drug Names: Drug name to RxCUI |
| GET | `/v1/rxnorm/approximate` | RxNorm Drug Names: Approximate drug match |
| GET | `/v1/rxnorm/spelling` | RxNorm Drug Names: Spelling suggestions |
| GET | `/v1/rxnorm/drugs` | RxNorm Drug Names: Clinical & branded drugs |
| GET | `/v1/rxnorm/related` | RxNorm Drug Names: Related concepts |
| GET | `/v1/rxnorm/properties` | RxNorm Drug Names: Concept properties |
| GET | `/v1/rxnorm/ndc` | RxNorm Drug Names: NDC to RxCUI |
| GET | `/v1/rxnorm/ndcs` | RxNorm Drug Names: NDCs for an RxCUI |

## Machine-readable artifacts (1)

- **OpenAPI** — https://artifacts.apis.io/fourzerotwo-si/openapi/fourzerotwo-si-rxnorm-api-openapi.yml

## Other fourzerotwo-si APIs (12)

- [fourzerotwo data API gateway](https://apis.io/apis/fourzerotwo-si/fourzerotwo-data-api-gateway/)
- [fourzerotwo-si Airports API](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-airports-api/)
- [fourzerotwo-si Arxiv API](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-arxiv-api/)
- [fourzerotwo-si Bank Of England API](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-bank-of-england-api/)
- [fourzerotwo-si Bathing Water API](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-bathing-water-api/)
- [fourzerotwo-si Calculators API](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-calculators-api/)
- [fourzerotwo-si Clinical Trials API](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-clinical-trials-api/)
- [fourzerotwo-si Companies House API](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-companies-house-api/)
- [fourzerotwo-si Crossref API](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-crossref-api/)
- [fourzerotwo-si Domains API](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-domains-api/)
- [fourzerotwo-si Earthquakes API](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-earthquakes-api/)
- [fourzerotwo-si Ecb API](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-ecb-api/)

## Tags

rxnorm

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/fourzerotwo-si/fourzerotwo-si-rxnorm-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/fourzerotwo-si/.