Wash. Rev. Code § 48.20.162
Except as provided in RCW 48.18.130, no such policy delivered or issued for delivery to any person in this state shall contain provisions respecting the matters set forth in RCW 48.20.172 to *48.20.272, inclusive, unless such provisions are in the words in which the same appear in the applicable section; except, that the insurer may, at its option, use in lieu of any such provision a corresponding provision of different wording approved by the commissioner which is not less favorable in any respect to the insured or the beneficiary. Any such provision contained in the policy shall be preceded individually by the appropriate caption or, at the insurer's option, by such appropriate individual or group caption or subcaption as the commissioner may approve.
RCW 48.20.162
*Reviser's note:RCW 48.20.272 was repealed by 2004 c 112 s 6.