Medical Terminologies MCP MCP Server

io.github.SidneyBissoli/medical-terminologies-mcp

Repository Registry

What is the Medical Terminologies MCP MCP server?

Diagnoses, drugs & lab codes: ICD-11, SNOMED, LOINC, RxNorm, MeSH, ATC, CID-10. 33 tools, MIT.

How to install Medical Terminologies MCP

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

WHO_CLIENT_ID
WHO ICD-11 API Client ID. Required only for ICD-11 tools (5 tools); the server starts without it and other terminologies (LOINC, RxNorm, MeSH, ATC, CID-10) work unauthenticated. Get credentials at https://icd.who.int/icdapi.
WHO_CLIENT_SECRET
secret
WHO ICD-11 API Client Secret. Required only for ICD-11 tools.
WHO_ICD11_RELEASE_ID
ICD-11 release to query (e.g. 2024-01, 2025-01). Optional; defaults to 2024-01.
ENABLE_SNOMED_TOOLS
Set to 'true' to register the 6 SNOMED-dependent tools (snomed_search, snomed_concept, snomed_hierarchy, snomed_descriptions, snomed_ecl, plus map_snomed_to_icd10). Disabled by default because the historical public IHTSDO Snowstorm endpoint was retired (HTTP 410 Gone). Requires SNOMED_BASE_URL pointing at a working self-hosted Snowstorm.
SNOMED_BASE_URL
Base URL of a self-hosted Snowstorm instance (e.g. https://my-snowstorm.example.com/snowstorm/snomed-ct). Required only when ENABLE_SNOMED_TOOLS is true.
SNOMED_LANGUAGE
Accept-Language tag(s) for SNOMED responses (e.g. pt, pt-BR, es). Optional; defaults to 'en'. Composite values with q-weights depend on the upstream Snowstorm instance.
LOG_LEVEL
pino log level (debug, info, warn, error, fatal). Optional; defaults to 'info'. Logs go to stderr only — never stdout (which is the MCP stdio transport).

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "medical-terminologies-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "medical-terminologies-mcp"
      ],
      "env": {
        "WHO_CLIENT_ID": "<YOUR_WHO_CLIENT_ID>",
        "WHO_CLIENT_SECRET": "<YOUR_WHO_CLIENT_SECRET>",
        "WHO_ICD11_RELEASE_ID": "<YOUR_WHO_ICD11_RELEASE_ID>",
        "ENABLE_SNOMED_TOOLS": "<YOUR_ENABLE_SNOMED_TOOLS>",
        "SNOMED_BASE_URL": "<YOUR_SNOMED_BASE_URL>",
        "SNOMED_LANGUAGE": "<YOUR_SNOMED_LANGUAGE>",
        "LOG_LEVEL": "<YOUR_LOG_LEVEL>"
      }
    }
  }
}

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