SNOMED CT Terminology

Healthcare and Life Sciences · by SNOMED International · Verified

Connector Search, validate, and expand SNOMED CT concepts, directly from SNOMED International

Install

In Claude, open Settings, then Connectors.
Find SNOMED CT Terminology in the directory, or choose Add custom connector and paste the URL below.
No sign-in. Turn it on in a chat from the tools menu.

Connector URL

https://snowstorm-mcp.snomedtools.org/mcp

Claude Code

claude mcp add --transport http snomed-ct-terminology https://snowstorm-mcp.snomedtools.org/mcp

Run in a terminal, then run /mcp in Claude Code to sign in.

Add in Claude Open on claude.com

About

SNOMED CT is the world's most comprehensive clinical terminology, used in electronic health records across more than 80 countries. This connector gives Claude direct access to it through SNOMED International's terminology server.

Use it to look up concepts by code or name, validate that a code exists and is active, test subsumption between concepts, navigate the hierarchy (ancestors, children, descendants), and expand value sets using Expression Constraint Language (ECL). It works across all SNOMED CT editions available on the connected backend, including the International, US and Australian editions.

Every tool is read-only, the connector never modifies terminology data. It runs as a stateless proxy to the configured Snowstorm instance, holding no query content or personal data between requests.

Built and maintained by SNOMED International, the owners of SNOMED CT.

Tools

fhir_metadata
list_terminologies
server_capabilities
server_health
snomed_expand
snomed_get_ancestors
snomed_get_children
snomed_get_descendants
snomed_lookup
snomed_subsumes
snomed_validate_code
snowstorm_get_concept_native
snowstorm_list_codesystems
snowstorm_list_versions
snowstorm_search_concepts

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From the maker

Facts

Kind: Connector
Category: Healthcare and Life Sciences
Made by: SNOMED International
Runs: Remote server
Works in: Claude, Claude API, Claude Code, Claude Desktop
Sign-in: Not required
Added: 2026-06-23
Source: Verified