WHO ICD-11 codes

WHO ICD-11 — returns code, title, type (stem vs extension), and often a definition.

How to use

Search by title or code. `type` selects stem (primary) codes, extension (post-coordination) codes, or both.

Parameters

Name	Type		Description
query	string	required	Diagnosis/title term or ICD-11 code.
type	enum(stem \| extension \| category)	optional	Default category (both).
limit	number	optional	Max results (default 20).

Example input

{
  "query": "heart failure",
  "limit": 2
}

Example output

{
  "total": 3,
  "rows": [
    {
      "code": "BD10",
      "title": "Congestive heart failure",
      "type": "stem",
      "definition": "A clinical syndrome characterised by abnormalities of ventricular function…"
    }
  ]
}

Call it (MCP tools/call)

{
  "method": "tools/call",
  "params": {
    "name": "lookup_icd11",
    "arguments": {
      "query": "heart failure",
      "limit": 2
    }
  }
}

Endpoint: POST https://clinical-mcp.mcharge.in/mcp (Streamable HTTP).