icdwise

<div align="center"> <img src="https://qinisolabs.github.io/icdwise/logo.svg" width="96" height="96" alt="Qiniso" /> # icdwise **Verified ICD-10-CM code lookup & validation for AI agents — official descriptions, not guesses.** *Verified, trustworthy data tools for AI agents. "Qiniso" means "truth" in Zulu.* [Website](https://qinisolabs.github.io/icdwise/) · [npm](https://www.npmjs.com/package/icdwise) · [MCP endpoint](https://icdwise.qinisolabs.workers.dev/mcp) · [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers?search=icdwise) </div> --- Ask an LLM what an ICD-10-CM code means and it will answer confidently — and often **wrongly**: the wrong laterality, the wrong severity, the wrong condition entirely, and it will happily invent a description for a code that doesn't exist. **icdwise** looks the code up in the official U.S. ICD-10-CM code set and returns the real description — or an honest *"not found"* instead of a guess. > Asked to describe real ICD-10-CM codes, a frontier model with no tools was **wrong ~38% of the time** — e.g. it called `H40.1131` *"severe stage, right eye"* (it's *mild, bilateral*) and `T63.011A` *"ingested mushrooms"* (it's *rattlesnake venom*) — and it **fabricated a description for a code that doesn't exist**. icdwise: the official text, or "not found." Never a guess. ## Add it to Claude Settings → Connectors → **Add custom connector**, and paste — no login, no key: ``` https://icdwise.qinisolabs.workers.dev/mcp ``` Stateless, reads no user data, requires no secrets. Prefer to run it locally over stdio? Add `{ "command": "npx", "args": ["-y", "icdwise"] }` under `mcpServers` in your client config. ## Use it as a library ```bash npm i icdwise ``` ```ts import { lookupIcd10, validateIcd10, searchIcd10 } from "icdwise"; lookupIcd10("E11.9").description; // "Type 2 diabetes mellitus without complications" lookupIcd10("H40.1131").description; // "Primary open-angle glaucoma, bilateral, mild stage" validateIcd10("E11.99").valid; // false — well-formed but not a real code searchIcd10("generalized anxiety"); // → [{ code: "F41.1", description: "Generalized anxiety disorder" }, ...] ``` Codes are accepted with or without the dot (`E11.9` or `E119`). A well-formed code that isn't in the official set returns `found: false` with a clear note — it never invents a description. ## Tools — 3 | Tool | What it answers | | --- | --- | | **lookup_icd10** | The official description of a code (+ canonical form and 3-char category) | | **validate_icd10** | Is this a real ICD-10-CM code? (well-formed *and* in the official set) | | **search_icd10** | Reverse lookup — find the code(s) for a condition by keywords | ## Data ICD-10-CM is U.S. **public-domain** data (NCHS/CMS). The full code set (~74,000 codes) is bundled and generated from the official CMS release via `npm run build-data <icd10cm-codes-YYYY.txt>` (see `scripts/build-data.mjs`); every response reports the `datasetVersion` it used. Descriptions are the official text — the curated, versioned dataset kept current is the moat. ## What it is *not* - **Not medical advice**, and not a determination of billability, coverage, or clinical appropriateness. - **Not ICD-10 (WHO) or ICD-11** — this is ICD-10-**CM** (the U.S. Clinical Modification). - **Not a guesser** — unknown/retired/non-leaf codes return an honest "not found", never a fabricated description. ## Architecture A single TypeScript package exposing one MCP server over two transports — **stdio** (local / `npx`) and a **Cloudflare Worker** (hosted edge endpoint) — both driven by the same `core.ts` tool definitions, which also power the importable library. ```bash npm install npm run build npm test ``` ## Privacy This tool runs locally on your machine and is built not to collect, store, or transmit your data — no analytics, no telemetry, no account. All reference data is bundled — no network calls, and nothing leaves your device. Full policy: <https://qinisolabs.github.io/privacy.html>. ## License Apache-2.0. ICD-10-CM data is U.S. public domain (NCHS/CMS); see `NOTICE`.