Remittance Advice Reconciliation

Remittance advice reconciliation is the process of matching each payer's remittance advice — the electronic 835 (ERA) from Medicare and other payers — against the claims you submitted and the payment you expected. It confirms that every claim was paid, denied, or adjusted correctly and surfaces the gaps for follow-up.

Medicare contractors return the electronic remittance advice in the X12 835 version 5010 format, the national HIPAA standard, and each 835 carries the detail needed to post payments and track adjustments ^[1]. Reconciliation lines up each 835 line against the corresponding 837 claim and the expected level-of-care per diem, then interprets the adjustment codes: Claim Adjustment Reason Codes (CARCs) explain why a line was paid differently than billed, and Remittance Advice Remark Codes (RARCs) add specificity. Discrepancies are triaged into underpayments, denials, recoupments/takebacks, and adjustments that require an appeal or a corrected claim. For hospices, reconciliation extends beyond claim-level posting to the aggregate cap. Payments above the annual per-beneficiary cap are overpayments that must be repaid, so RA data feeds the self-determined cap that hospices file with the MAC after the cap year — the twelve-month period ending September 30, not the pre-2017 November 1–October 31 window some legacy references still cite (42 CFR 418.3)^[2]; the self-determination is due no earlier than 3 months and no later than 5 months after the cap year ends. Reconciled remittance data is also what distinguishes a true denial from a routine adjustment and drives the denial-management and appeals workflow.

Unreconciled remittance lines are silent revenue leakage — an underpaid per diem or a partial takeback does not announce itself, and if no one reads the CARC/RARC pair, the variance simply ages out. Line-level reconciliation against the expected per diem protects margin where lump-sum deposit posting does not, because a deposit that ties to the bank can still conceal dozens of individually wrong lines. Hospices carry a second, larger exposure most acute-care billers never see: the aggregate cap, where over-cap payments must be returned regardless of how cleanly each individual claim paid. Line-level 835 reconciliation is the mechanism by which takebacks are caught, wrongful denials are appealed inside their deadlines, and cap exposure is known before the MAC imposes it.