Texas Insurance Code - INS § 843.350. Overpayment

(1) not later than the 180th day after the date the physician or provider receives the payment, the health maintenance organization provides written notice of the overpayment to the physician or provider that includes the basis and specific reasons for the request for recovery of funds;  and

(2) the physician or provider does not make arrangements for repayment of the requested funds on or before the 45th day after the date the physician or provider receives the notice.