Washington Insurance Overpayment Recovery Laws

A carrier may not request a refund from a health care provider of a payment previously made to satisfy a claim unless it does so in writing to the provider within twenty-four months after the date that the payment was made.

A carrier may not for reasons related to coordination of benefits with another carrier (a) Request refund from a health care provider; or (b) request that a contested refund be paid any sooner than six months after receipt of the request. Any such request must specify why the carrier believes the provider owes the refund, and include the name and mailing address of the entity that has primary responsibility for payment of the claim.

Does not apply in cases of fraud