Wash. Admin. Code § 284-20B-140
If an insurer will use a previously approved Washington amendatory endorsement with a new form, the filer must:
[Statutory Authority: RCW 48.02.060, 48.110.150. WSR 08-21-091 (Matter No. 2007-11), § 284-20B-140, filed 10/15/08, effective 2/1/09.]