How do I install the medical mcp server?

Use a recorded configuration for your client, replace example credential values and paths, and verify the documented runtime. Restart or reconnect the client, then inspect the available tools.

What credentials does it need?

It reads `MCP_TRANSPORT_TYPE`, `MCP_LOG_LEVEL`, `MEDCODE_DB_PATH`, `MCP_HTTP_ENDPOINT_PATH` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

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Medical MCP Server

Offline US medical code lookup and crosswalk — ICD-10-CM, ICD-10-PCS, HCPCS Level II. Keyless.

Remote serverstreamable-httpGo

What is the Medical MCP Server?

Offline US medical code lookup and crosswalk — ICD-10-CM, ICD-10-PCS, HCPCS Level II. Keyless.

What the server does

Declarative tool definitions — single file per tool, framework handles registration and validation
Unified error handling — handlers throw, framework catches, classifies, and formats
Typed per-tool error contracts — capable clients preview failure modes from tools/list
Structured logging with optional OpenTelemetry tracing
STDIO and Streamable HTTP transports
Bundled SQLite + FTS5 index — offline, keyless, deterministic; no runtime network I/O, no rate limit

Credentials and setup notes

Bun v1.3 or higher (or Node.js v24+ — the server falls back to the better-sqlite3 optional dependency when not run under Bun). - No API key, account, or network access required.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
medcode_get_code	Decode 1–50 codes to their official descriptions. Auto-detects the system per code; partial-success found / notFound.
medcode_search_codes	Full-text search over official descriptions — go from a clinical description to the code.
medcode_check_code	Validate a code's existence, currency, and billability, with a whyNot for non-billable/terminated cases.
medcode_map_codes	Crosswalk a code within its hierarchy (parents/children) or a drug across RxNorm (name ↔ RXCUI, NDC ↔ RXCUI, RXCUI → ingredients/brands).
medcode_browse_hierarchy	Walk a system's hierarchy for discovery without a search term.
medcode_list_systems	List bundled systems with release identifiers, effective dates, and code counts (provenance).

How to install the Medical MCP Server

{
  "mcpServers": {
    "medical-codes-mcp-server": {
      "type": "streamable-http",
      "url": "https://medical-codes.caseyjhand.com/mcp"
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

Bun v1.3 or higher (or Node.js v24+ — the server falls back to the better-sqlite3 optional dependency when not run under Bun). - No API key, account, or network access required.

Variable	Description	Required
MCP_TRANSPORT_TYPE	Configuration value read at startup.	Optional
MCP_LOG_LEVEL	Configuration value read at startup.	Optional
MEDCODE_DB_PATH	Filesystem location the server is allowed to use.	Optional
MCP_HTTP_ENDPOINT_PATH	Filesystem location the server is allowed to use.	Optional

Example prompts to try

“Use Medical to medcode get code.”
“Use Medical to medcode search codes.”
“Use Medical to medcode check code.”

Frequently asked questions

Offline US medical code lookup and crosswalk — ICD-10-CM, ICD-10-PCS, HCPCS Level II. Keyless. Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.