Wash. Admin. Code § 182-530-7200
(1) The medicaid agency reimburses out-of-state pharmacies for prescription drugs provided to an eligible client within the scope of the client's medical care program if the pharmacy:
[Statutory Authority: RCW 41.05.021 and 41.05.160. WSR 16-01-046, § 182-530-7200, filed 12/9/15, effective 1/9/16. WSR 11-14-075, recodified as § 182-530-7200, filed 6/30/11, effective 7/1/11. Statutory Authority: RCW 74.04.050, 74.08.090, 74.09.530, and 74.09.700. WSR 07-20-049, § 388-530-7200, filed 9/26/07, effective 11/1/07.]