Instructions for completing the claim form: 1. Complete all applicable areas of the claim form. 2.1. All claims for overpayment must be submitted to a provider within 30 months after the health insurer's payment of the claim. Discover each state's laws related to insurance overpayment recovery and feel confident in your process managing overpayments and credit balances. We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error. In the Empl ID field, enter the Employee's 8-digit Numeric Identification Number. • In the Pay Period End Date field, enter the Pay Period End Date. A detailed explanation of how the refund amount was computed;. • The specific reason(s) for the refund request;. All claims for overpayment must be submitted to a provider within 30 months after the health insurer's payment of the claim.