# HCPCS Procedure and Supply Code Search via NIH NLM Clinical Tables

> HCPCS Procedure and Supply Code Search via NIH NLM Clinical Tables is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Search HCPCS (Healthcare Common Procedure Coding System) procedure and supply codes by term using the NIH NLM Clinical Tables service, returning matching codes and display names.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-nlm-hcpcs
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hcpcs-procedure-and-supply-code-search-via-nih-nlm-clinical-tables-0decb600
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_csY18Gvc6_nS8uH5ht3zT

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 hcpcs-procedure-and-supply-code-search-via-nih-nlm-clinical-tables-0decb600 -d '<json body>'
```

Example prompt: Can you search the HCPCS codes for 'ambulance transport' and tell me which procedure or supply codes match?

## When to prefer this

Use this endpoint when you need to programmatically look up HCPCS codes by keyword without managing an NLM API key, especially in health, billing, or clinical agent workflows. Prefer it over manual code lookups or full NLM API integration when you need a fast, keyless, pay-per-call solution within an agentic pipeline.

## Known failure modes

- Empty result set if the search term is too vague or misspelled
- No results for very specific or proprietary product names not indexed in NLM
- Proxy payment failure if USDC balance is insufficient (x402 payment required)
- Malformed request body causes 400-level error
- NLM upstream service unavailability causes degraded or failed response

## How this service works

Search HCPCS Procedure And Supply Codes from the NIH NLM Clinical Tables service by terms, no key. Returns matching codes and display names. For AI agents in health, coding, and clinical workflows.

## Output

Returns a list of HCPCS procedure and supply codes matching the search term, including each code's identifier and human-readable display name, sourced from the NIH NLM Clinical Tables API.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hcpcs-procedure-and-supply-code-search-via-nih-nlm-clinical-tables-0decb600/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proxy.suverse.io](https://www.zero.xyz/host/proxy.suverse.io/llms.txt)