Wash. Admin. Code § 246-812-390
The board may take disciplinary action for billing practices including, but not limited to:
[Statutory Authority: RCW 18.30.065. WSR 20-04-028, § 246-812-390, filed 1/28/20, effective 2/28/20. Statutory Authority: Chapter 18.30 RCW and 2013 c 171. WSR 14-24-033, § 246-812-390, filed 11/24/14, effective 12/25/14. Statutory Authority: RCW 18.30.070(3). Readopted by WSR 98-20-068, § 246-812-390, filed 10/2/98, effective 11/2/98; WSR 95-22-062, § 246-812-390, filed 10/30/95, effective 11/30/95.]