Oregon Revised Statutes Remedies and Special Actions and Proceedings § 31.580

(1) In a civil action, when a party is awarded damages for bodily injury or death of a person which are to be paid by another party to the action, and the party awarded damages or person injured or deceased received benefits for the injury or death other than from the party who is to pay the damages, the court may deduct from the amount of damages awarded, before the entry of a judgment, the total amount of those collateral benefits other than:

(2) Evidence of the benefit described in subsection (1) of this section and the cost of obtaining it is not admissible at trial, but shall be received by the court by affidavit submitted after the verdict by any party to the action.