Assessing Overpayment When Review Was Based on Statistical

8.2.2 – Assessing Overpayment When Review Was Based on Statistical Sampling for Overpayment Estimation (Rev. 670, Issued: 08-19-16, Effective: 11-23-16, Implementation: 11-23-16) If contractors use statistical sampling for overpayment estimation of claims, they follow instructions in section 8.4 of this chapter to calculate the valid projected overpayment. They document the sampling methodology when review is based on statistical sampling for overpayment estimation. They notify the provider/supplier of the overpayment and refer the case to overpayment staff to make payment arrangements with the provider/supplier to collect the overpayment.