# meddra Hierarchy API

**Canonical:** https://apis.io/apis/meddra/meddra-hierarchy-api/  
**Provider:** meddra — https://apis.io/providers/meddra/  
**Base URL:** https://api.meddra.example.com  
**Documentation:** https://www.meddra.org/

meddra Hierarchy API is one of 4 APIs that [meddra](https://apis.io/providers/meddra/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 1 JSON Schema definition. Tagged areas include Hierarchy. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and 1 JSON Schema.

MedDRA hierarchy navigation (SOC → HLGT → HLT → PT → LLT)

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/meddra/refs/heads/main/openapi/meddra-hierarchy-api-openapi.yml
- **Documentation** — https://www.meddra.org/
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/meddra/refs/heads/main/json-schema/meddra-term-schema.json
- **JSONLDContext** — https://raw.githubusercontent.com/api-evangelist/meddra/refs/heads/main/json-ld/meddra-context.jsonld
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/meddra/refs/heads/main/apis.yml

## Other meddra APIs (3)

- [meddra Terms API](https://apis.io/apis/meddra/meddra-terms-api/)
- [meddra Validation API](https://apis.io/apis/meddra/meddra-validation-api/)
- [meddra Versions API](https://apis.io/apis/meddra/meddra-versions-api/)

## Tags

Hierarchy

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