Convert X12 834 Benefit Enrollment Files to CSV
Turn a raw 834 enrollment/maintenance file into a spreadsheet-ready CSV — subscriber and dependent enrollments, coverage levels, and effective dates. Runs entirely in your browser; sensitive PII never leaves your device.
Drag & drop your 834 file here
Up to 50MB — parsed entirely in your browser
or try it instantly with a free example 834 file — no upload needed:
No file parsed yet — upload an 834 file or load the sample above to see results here.
Parsed 834 Preview
Standard Detected
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| Group | Segment ID | Segment Description | Element # | Value |
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What Is an X12 834 File?
The 834 (Benefit Enrollment and Maintenance) is the ANSI X12 transaction set used by employers, HR systems, and benefit administrators to enroll, update, or terminate an individual's health plan coverage with an insurance carrier. It carries subscriber and dependent demographic information, coverage level (employee only, employee + spouse, family, etc.), plan identifiers, and effective/termination dates — the backbone of most electronic benefits enrollment workflows.
Read the Full Guide: Why Convert 834 Files, Key Segments, and More
Why Convert an 834 to CSV?
HR and benefits teams frequently need to audit enrollment files before they're transmitted to a carrier, or reconcile what a carrier's system shows against what was actually submitted. CSV makes it easy to spot-check specific employees, verify dependent counts, and confirm effective dates match open-enrollment expectations, all in a familiar spreadsheet view.
Key Segments You'll See in an 834 Export
- INS — Insured Benefit: identifies whether the record is for a subscriber or a dependent, and the maintenance type (add, change, cancel).
- NM1 — Name segments identifying the individual being enrolled.
- HD — Health Coverage: the specific plan and coverage level being enrolled in.
- DTP — Date/Time Reference: coverage effective and termination dates.
- COB — Coordination of Benefits: other insurance coverage information, when applicable.
A Note on Sensitive Personal Data
834 files contain personally identifiable information (PII) and sometimes health plan details for employees and their dependents. As with the 837 healthcare claim format, this tool's local-only processing model is directly relevant here — nothing is uploaded to a server. See the Security & Privacy page to verify this yourself before using it with real enrollment data.
Also Known As
People also search for this as an "X-12 834 to CSV converter," "benefit enrollment edi csv convertor," or "834 edi file won't open" — all land on the same structural parser here.
Related Pages
For general EDI background, read What Is an EDI File? and X12 EDI Viewer.
Frequently Asked Questions
Does this show whether a record is an add, change, or cancel?
Yes — the INS segment's maintenance type code is parsed and shown along with every other element in the record.
Can this handle both subscriber and dependent records?
Yes, both are parsed the same way, structurally, from the file's own segments.
Is my enrollment file uploaded anywhere?
No. Parsing happens entirely in your browser; the file is never transmitted to a server.
Is this a subscription?
No — a one-time payment (currently 50% off at $29.99) unlocks unlimited full-file exports, with no recurring fees.
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 834 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.