Wash. Rev. Code § 7.70.080
Any party may present evidence to the trier of fact that the plaintiff has already been compensated for the injury complained of from any source except the assets of the plaintiff, the plaintiff's representative, or the plaintiff's immediate family. In the event such evidence is admitted, the plaintiff may present evidence of an obligation to repay such compensation and evidence of any amount paid by the plaintiff, or his or her representative or immediate family, to secure the right to the compensation. Compensation as used in this section shall mean payment of money or other property to or on behalf of the plaintiff, rendering of services to the plaintiff free of charge to the plaintiff, or indemnification of expenses incurred by or on behalf of the plaintiff. Notwithstanding this section, evidence of compensation by a defendant health care provider may be offered only by that provider.
RCW 7.70.080
Findings-Intent-Part headings and subheadings not law-Severability-2006 c 8: See notes following RCW 5.64.010.
Severability-1975-'76 2nd ex.s. c 56: See note following RCW 4.16.350.