ICD-10 MCP Server

Version 1.0.0

Medical coding made accessible via Model Context Protocol

Quick Start

The ICD-10 MCP Server provides offline access to ICD-10-CM (diagnosis) and ICD-10-PCS (procedure) medical codes, covering ~170,000 codes sourced from CMS/CDC. Works seamlessly with Claude and other LLM clients.

User Guide Test Report Server Status

Connect to Claude in 2 minutes

Works on all Claude plans including the free tier.

Open Claude Settings

Go to claude.ai, click your profile icon (top right), then Settings › Connectors.

Add the MCP Server

Click + Add connector, enter any name (e.g. ICD-10 Codes), and paste the SSE URL below:

https://icd10mcpserver.zapperedge.com/sse

Start a new chat and verify

Open a new conversation (required — existing chats won't see the connector). Type:

Check the ICD-10 database status

Claude should reply with the record count, fiscal year, and last update date. You're live.

Other MCP clients (Cursor, Windsurf, VS Code Continue)

Use transport sse and URL https://icd10mcpserver.zapperedge.com/sse. No auth required. Full config snippets are in the GitHub User Guide.

Available Tools

icd10_lookup - Look up an exact ICD-10 code (e.g., J18.9)
icd10_search - Full-text search with filtering by type, category, or billable status
icd10_validate - Verify code format and confirm existence in the database
icd10_get_category - Browse all codes within a 3-character category
icd10_get_chapter - Navigate the 22 ICD-10-CM chapters
db_status - Check database record count, fiscal year, and update schedule

API Endpoints

GET /health - Server and database health

GET /tools/lookup?code=J18.9 - Look up a code

GET /tools/search?query=pneumonia&limit=20 - Search codes

GET /tools/validate?code=J18.9 - Validate a code

GET /tools/category?category=J18 - Get category codes

GET /tools/chapter?chapter=10 - Get chapter codes

GET /sse - MCP SSE endpoint for Claude Desktop

Example Usage with Claude

Once configured, you can ask Claude things like:

"What is the ICD-10 code for community-acquired pneumonia?"
"Search for all billable codes related to type 2 diabetes"
"Validate if E11.9 is a valid and billable ICD-10 code"
"What ICD-10 codes are in the respiratory chapter?"
                

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