# Free Online ANSI X12 EDI to JSON Converter & Inspector
> Instant, zero-install ANSI X12 EDI to JSON converter running on Cloudflare Workers edge isolates. Converts 837P, 837I, 835, 270/271, 834, and B2B transactions into clean typed JSON in sub-5ms.

- **Canonical URL:** https://stanzaapi.com/tools/x12-parser/converter/x12-to-json
- **Governing Standard:** ANSI ASC X12 Standards (005010) (Accredited Standards Committee X12 / HIPAA 5010)
- **Edge Latency SLA:** <2ms Edge (Cloudflare V8 Isolates)
- **Execution Model:** Pure compute $f(x) = y$, 100% In-Memory (Zero Store, Zero Log)

## Technical Overview & Governing Rules
This free online utility ingests raw ANSI X12 EDI streams, detects element, component, and segment delimiters dynamically from the ISA header, and outputs strongly-typed hierarchical JSON.

Designed for healthcare IT engineers, clearinghouse developers, and integrations specialists who need to quickly inspect, debug, or parse EDI envelopes without installing complex Java or .NET runtimes.

Zero PHI or transaction data is ever persisted. Processing executes purely in transient isolate memory and streams directly to your browser.

## Specification Matrix
| Transaction | Input Standard | Output Schema Model |
| --- | --- | --- |
| 837 Professional / Institutional | HIPAA 5010X222A1 / 5010X223A2 | Claims, Providers, Diagnoses, Service Lines JSON |
| 835 Electronic Remittance Advice | HIPAA 5010X221A1 | Checks, Payments, CAS Adjustments, CARC/RARC JSON |
| 270/271 Eligibility Inquiry/Response | HIPAA 5010X279A1 | Subscriber, Dependent, Benefit Details (EB) JSON |
| 834 Benefit Enrollment | HIPAA 5010X220A1 | Members, Coverage, Health Plans JSON |

## Standard JSON Response Model
```json
{
  "transactionSet": "837",
  "claimsCount": 1,
  "submitter": "SUBMITTER1",
  "receiver": "RECEIVER01",
  "claims": [
    {
      "claimNumber": "CLM001",
      "billedAmount": 150
    }
  ]
}
```

## Frequently Asked Questions & Edge Cases
### Q: Does this converter store or log my X12 EDI data?
**A:** No. All conversions execute 100% in-memory within Cloudflare V8 isolates. Zero data is retained on disk or sent to third-party servers.

### Q: Can I automate this conversion in Python, Node.js, or C#?
**A:** Yes! Use our zero-dependency API or install the official client SDK: npm install @noorm-mkdad/x12-parser-client or pip install x12-parser-client.