a.    Request for Adjustment of Payment.  Either party shall be entitled to request an adjustment of payment if, within one hundred eighty (180) days from the date of payment, it notifies the other party in writing of the overpayment or underpayment and provides documentation substantiating such claim.  Payer shall have the right to make, and Hospital shall have the right to request, corrective adjustments to a previous payment; provided however, that Payer shall have no obligation to pay additional amounts after 12 months from the date the initial claim was paid.  Hospital shall have the right to make, and Payer shall have the right to request, a refund of overpayments; provided however, that Hospital shall have no obligation to refund overpayments after 12 months from the date the initial claim was paid.

b.    Payment Disputes.  The parties shall work cooperatively and in good faith to attempt to resolve payment issues on an informal basis within ninety (90) days of the first notification of a request for an adjustment of payment, pursuant to paragraph a above.  If this is unsuccessful, then any disputes concerning claims of overpayment or underpayment shall be resolved in accordance with Dispute Resolution/Arbitration procedure referenced in section [   ] of this Contract.

c.    Payments Final.  Except for those payments that have been submitted to Dispute Resolution/Arbitration in accordance with the foregoing, all payments shall be final.

d.    Paying Adjustments.  If the parties determine that Plan has underpaid Provider, Plan shall pay the underpaid amount to Provider within thirty (30) days of said determination.  If the parties determine that Plan has overpaid Provider, Provider shall reimburse Plan for the overpayment within thirty (30) days of said determination.