Washington Revised Code Title 48. Insurance § 48.23.340. Prohibited policy plans

(1) Issued under any plan for the segregation of policyholders into mathematical groups and providing benefits for a surviving policyholder of a group arising out of the death of another policyholder of such group, or under any other similar plan.

(2) Providing benefits or values for surviving or continuing policyholders contingent upon the lapse or termination of the policies of other policyholders, whether by death or otherwise.