Claims (X12 837)

Convert X12 837 to CSV — Free Online EDI Claim Converter

Convert professional and institutional claim files (837P / 837I) to a clean, filterable CSV table in seconds. Claim info, subscriber, service lines and diagnosis codes — your file stays on your device and is never uploaded to our server.

Drag & drop your 837 EDI file here

Up to 50MB — or use the pre-loaded sample claim below

Exports to CSV, Excel, JSON & XML

or try it instantly with a free example file — no upload needed:

Loading sample 837 claim…

What Is an X12 837 File, in Plain English?

An X12 837 is the standard electronic format U.S. healthcare providers and clearinghouses use to submit an insurance claim — it packs subscriber info, provider details, diagnosis codes, and service lines into one dense text file built for computer systems, not humans. If you've opened one and seen a wall of codes like CLM*A37YH...~, that's normal — this tool turns that structure into an ordinary spreadsheet automatically, so you don't need to know the 837 spec to read your own claim data.

Read the Full Guide: Why Parse 837 Files, Who Uses This, and More

Why Parse 837 Claim Files to CSV?

The X12 837 transaction set carries dense, nested claim data — subscriber demographics, provider identifiers, service lines, procedure codes, and diagnosis pointers — all packed into a single flat text file. Converting an 837 to CSV makes it possible to open claim data in Excel, load it into a BI tool, or reconcile it against a practice management system without writing a custom EDI parser. Because this tool runs entirely in your browser, the file content is never uploaded to any server — useful for teams who prefer not to send sensitive business files to online conversion services. This tool performs structural parsing only; it does not validate or certify data against any medical, financial, or legal schema.

Common Segments Extracted from 837 Files

  • CLM — Claim Information (claim ID, total charge, facility code)
  • NM1 — Subscriber, patient, provider and payer names
  • HI — Diagnosis codes (ICD-10)
  • SV1 / SV2 — Professional or institutional service lines with CPT/HCPCS codes
  • DTM — Service dates

Who Converts X12 837 Files to CSV?

Medical billing teams, revenue-cycle analysts, clearinghouse support staff, and healthcare software QA testers all periodically need to open a raw 837 file without a full practice-management system on hand. A browser-based converter fits that occasional, ad-hoc need — spot-checking a claim before it goes out, auditing a batch a payer rejected, or verifying test data during integration work — without installing a dedicated EDI translator just to look at one file.

Browser-Based vs. Traditional EDI Translators for 837 Files

Full EDI translator/VAN platforms are built for continuous, automated claim submission pipelines and typically involve licensing, IT setup, and ongoing fees. For a single file review this is overkill. This tool runs immediately in any modern browser, needs no account for the free preview, and never sends claim data to a server — a meaningfully different privacy posture for files that can contain protected health information. This tool performs structural parsing only and makes no claim of HIPAA compliance or certification.

Also Known As

People also search for this as an "X-12 837 to CSV converter," "healthcare claim edi convertor," or "837 edi file won't open" — all land on the same structural parser here.

Also Need to Convert Other Healthcare EDI Files?

The same parser also reads X12 835 remittance advice (ERA) files, plus other X12 and EDIFACT transaction sets in general — see the homepage for the full list of supported formats.

Frequently Asked Questions

Is my EDI file uploaded anywhere?

No. This converter runs entirely in your browser. Your X12 837 file is read and parsed locally on your device and is never uploaded, transmitted, or stored on any server.

What EDI formats are supported?

The tool auto-detects ANSI X12 (including 837, 835, 850, and other transaction sets) and EDIFACT files by reading the ISA/UNA/UNB header delimiters, so you can drop in most standard EDI files without manual configuration.

Can I export to Excel or JSON too?

Yes. Once unlocked, you can export the fully parsed file as CSV, Excel (.xlsx), or JSON — or copy the structural table directly to your clipboard.

Is this a subscription? What's your refund policy?

No subscription — it's a one-time payment (currently 50% off at $29.99) for lifetime access on this browser. Enter the licence key Gumroad emails you to unlock full export. Because the unlock is delivered in full on payment, all sales are final; see our Refund Policy for details.

Does this support both 4010 and 5010 versions, and can I batch-convert multiple files?

Yes on versions — the parser reads structurally from the file's own delimiters, so 4010, 5010, and other X12 versions of the 837 all work. It currently processes one file at a time; there's no bulk/batch upload feature yet. It runs on any device with a modern browser, including Mac and Chromebook.