Wash. Admin. Code § 246-840-400
(2) The ARNP when exercising prescriptive authority is accountable for competency in:
[Statutory Authority: RCW 18.79.050, 18.79.110, and 18.79.160. WSR 16-08-042, § 246-840-400, filed 3/30/16, effective 4/30/16. Statutory Authority: RCW 18.79.010, [18.79.]050, [18.79.]110, and [18.79.]210. WSR 09-01-060, § 246-840-400, filed 12/11/08, effective 1/11/09. Statutory Authority: Chapter 18.79 RCW. WSR 97-13-100, § 246-840-400, filed 6/18/97, effective 7/19/97.]