Medicare Program Integrity Manual (Pub. 100-08), Ch. 8 § 8.4.4.4.4
Overpayment/Underpayment Worksheets
8.4.4.4.4 - Overpayment/Underpayment Worksheets
(Rev. 377, Issued: 05-27-11, Effective: 06-28-11, Implementation: 06-28-11)
Worksheets shall be used in calculating the net overpayment. The worksheet shall
include data on the claim number, line item, amount paid, audited value, amount
overpaid, reason for disallowance, etc., so that each step in the overpayment calculation
is clearly shown. Underpayments identified during reviews shall be similarly
documented.