WAC 284-43-2050 (10)(a)(i-ii)

(10) The time frames for carrier prior authorization determination and notification to a participating provider or facility are as follows:

(a) For standard prior authorization requests:

(i) The carrier or its designated or contracted representative must make a decision and provide notification within five calendar days.

(ii) If insufficient information has been provided to a carrier or its designated or contracted representative to make a decision, the carrier or its designated or contracted representative has five calendar days to request additional information from the provider or facility.