There have been many comments on what constitutes a provider having to pay back a payer when they request payback of an overpayment. Each state has different regulations. Some states have no regulations that prevent a provider from having to pay back a payer. I received this link from a peer and would like to pass it on to those of you that could use it as a reference tool.http://www.mtbc.com/legal%20corner/Insurance%20Refund%20Recoupment%20LAWS.pdf