Wash. Admin. Code § 388-101D-0050
The service provider must prepare and maintain written documents as follows:
[WSR 16-14-058, recodified as § 388-101D-0050, filed 6/30/16, effective 8/1/16. Statutory Authority: Chapter 71A.12 RCW. WSR 08-02-022, § 388-101-3210, filed 12/21/07, effective 2/1/08.]