Wash. Rev. Code § 74.48.040
(1) The department, in cooperation with the office of financial management, shall develop rules for determining the amount to be assessed to individual skilled nursing facilities, notifying individual skilled nursing facilities of the assessed amount, and collecting the amounts due. Such rule making shall specifically include provision for:
(c) Adjustment of the assessment amounts as follows:
(i) The assessment amounts under RCW 74.48.030 may be adjusted as follows:
(2) By November 30th of each year, the department shall provide the following data to the office of financial management, the chair of the fiscal committee of the senate and the house of representatives, the Washington health care association, and aging services of Washington:
[ 2011 1st sp.s. c 7 s 16.]