What is the primary use of the 835 remittance file?

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The main use of the 835 remittance file is to post payments and reconcile accounts. It is the electronic remittance advice that payer systems send to show exactly how a payment was applied to each service line, including the paid amount, allowed amount, patient responsibility (coinsurance, deductible), and any adjustments or reason codes for denials or reductions. With this line-by-line detail, your practice management system can automatically update patient and provider ledgers, ensuring the accounts receivable reflects what the payer actually paid and what remains unpaid. This file makes it possible to identify mismatches between what was billed and what was paid, so posting is accurate and reconciliation is efficient. It’s not used to file new claims (that’s the 837), not for scheduling appointments, and while it informs payments and patient balances, direct patient communications are typically handled via EOBs or statements rather than the 835 itself.