Indiana Code Title 34. Civil Law and Procedure § 34-18-16-2

Sec. 2. (a) Evidence of an advance payment is not admissible until there is a final judgment in favor of the plaintiff.  In this case the court shall reduce the judgment to the plaintiff to the extent of the advance payment.  The advance payment inures to the exclusive benefit of the defendant or the defendant's insurer making the payment.

(b) If the advance payment exceeds the liability of the defendant or the insurer making the advance payment, the court shall order any adjustment necessary to equalize the amount that each defendant is obligated to pay, exclusive of costs.  An advance payment in excess of an award is not repayable by the person receiving the advance payment.