# fittings ICD-10-CM Code Lookup

> fittings ICD-10-CM Code Lookup is a paid API for AI agents from fittings.sh, paid per call via x402, $0.00398/call, status unknown (last checked 2026-09-14).

Verifies an ICD-10-CM diagnosis code or searches the code set by free text, returning official code descriptions.

## Facts

- Endpoint: GET https://fittings.sh/v1/icd10/lookup
- Price: $0.00398/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fittings-icd-10-cm-code-lookup-cbef7d41
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jTTpIcCHKt_t2lJjiRBYv

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fittings-icd-10-cm-code-lookup-cbef7d41
```

Example prompt: Can you look up the ICD-10-CM code E11.9 and tell me its official description? Also search for any related codes for 'type 2 diabetes without complications' and show me the top 5 results.

## When to prefer this

Use this endpoint when you need to validate a specific ICD-10-CM diagnosis code, retrieve its official description, or search the ICD-10-CM code set by clinical terminology. It is ideal for healthcare billing workflows, clinical documentation automation, medical record enrichment, and insurance claim preparation where authoritative code verification is required.

## Known failure modes

- Invalid or non-existent ICD-10-CM code returns no results or an error
- Overly vague free-text query may return irrelevant or low-confidence matches
- Limit parameter outside 1-50 range may be rejected
- Missing required 'query' parameter causes a 400 error
- Ambiguous query terms may return too broad a set of results

## How this service works

Verifies an ICD-10-CM diagnosis code or searches the code set by text, returning official code descriptions.

## Output

Returns one or more ICD-10-CM entries, each containing the code and its official description. In code-lookup mode, confirms whether a specific code exists and returns its description. In text-search mode, returns a ranked list of matching codes and descriptions up to the specified limit.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "query"
     ],
     "properties": {
      "mode": {
       "type": "string",
       "description": "'code', 'text' or 'auto' (default)"
      },
      "limit": {
       "type": "number",
       "description": "1-50, default 10"
      },
      "query": {
       "type": "string",
       "description": "A code such as E11.9, or free text such as \"type 2 diabetes\""
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fittings-icd-10-cm-code-lookup-cbef7d41/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fittings.sh](https://www.zero.xyz/host/fittings.sh/llms.txt)