Wash. Rev. Code § 48.44.230
Every subscriber of an individual health care service plan contract issued after September 1, 1973, may return the contract to the health care service contractor or the insurance producer through whom it was purchased within ten days of its delivery to the subscriber if, after examination of the contract, he or she is not satisfied with it for any reason, and the health care service contractor shall refund promptly any fee paid for such contract. Upon such return of the contract it shall be void from the beginning and the parties shall be in the same position as if no policy had been issued. Notice of the substance of this section shall be printed on the face of each such contract or be attached thereto. An additional ten percent penalty shall be added to any premium refund due which is not paid within thirty days of return of the policy to the insurer or insurance producer.
RCW 48.44.230
Severability-Effective date-2008 c 217: See notes following RCW 48.03.020.