WAC 110-15-0267
WAC 110-15-0267. Payment discrepancies — Provider underpayments
(1) Underpayments to providers occur when DCYF pays less than the amount providers are eligible to receive.
(2) Underpayment requests will only be considered by DCYF if providers submit their original invoice for payment to DCYF no later than three months after the date of service.