Guides
- How to read an 835 file (ERA) — segment by segment — A plain-English walkthrough of the X12 835 electronic remittance advice: ISA/GS envelopes, BPR and TRN payment, CLP claims, SVC lines, CAS adjustments and PLB.
- Claim adjustment group codes: CO, PR, OA, PI explained — What the CO, PR, OA and PI group codes on an 835 or EOB mean, who is responsible for the amount, and how they combine with CARC reason codes like CO-45 and PR-1.
- CARC and RARC codes list — plain-English summaries — Common claim adjustment reason codes (CARC) and remittance advice remark codes (RARC) found in 835 files, with short plain-English summaries and links to the official lists.
- 835 PLB provider-level adjustments: WO, L6, FB and more — Why the ERA payment doesn't equal claims paid: provider-level adjustments in the PLB segment such as overpayment recovery (WO), interest (L6) and forward balance (FB).
- ERA vs EOB: what's the difference? — An ERA (the 835 file) and an EOB carry the same remittance information. How they differ, why practices switch to ERAs, and how to read an ERA when you only have the raw file.
Tools
- 835 file viewer
- Convert an 835 file to Excel
- 835 to CSV converter
- 835 to PDF — print an ERA as a readable remit
- Find denials in your 835 files
- ERA payment reconciliation