We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error. Paper claims (CMS 1500 and UB-04 forms) may be sent to the addresses indicated, unless otherwise noted on the member's ID card.Please download the form, complete each field and print. Include the form with your refund so we can properly apply the refund and record the receipt. What should I do if I receive an overpayment determination? If you have been overpaid, you will receive a written Notice of Determination in the mail. If you have an overpayment, we'll send you a decision letter. It will say how much you owe. What is an overpayment? There are two types of life insurance under the FEGLI Program: Basic and Optional.