[Statutory Authority: RCW 41.05.021 and 41.05.160. WSR 15-18-065, § 182-550-2431, filed 8/27/15, effective 9/27/15. WSR 11-14-075, recodified as § 182-550-2431, filed 6/30/11, effective 7/1/11. Statutory Authority: RCW 74.08.090, 42 U.S.C. 1395 x(v), 42 C.F.R. 447.271, 447.11303, and 447.2652. WSR 99-06-046, § 388-550-2431, filed 2/26/99, effective 3/29/99.]