(1) For each plan of insurance with separate rates for smokers and nonsmokers an insurer may use:

(a) Composite mortality tables to determine minimum reserve liabilities and minimum cash surrender values and amounts of paid-up nonforfeiture benefits;

(b) Smoker and nonsmoker mortality tables to determine the valuation net premiums and additional minimum reserves, if any, required by RCW 48.74.070 and use composite mortality tables to determine the basic minimum reserves, minimum cash surrender values and amounts of paid-up nonforfeiture benefits; or

(c) Smoker and nonsmoker mortality to determine minimum reserve liabilities and minimum cash surrender values and amounts of paid-up nonforfeiture benefits.

(2) The composite mortality tables must be used for plans of insurance without separate rates for smokers and nonsmokers.

(3) The insurer for each plan of insurance may use the 2017 CSO mortality table in its ultimate or select and ultimate form to determine minimum reserve liabilities and minimum cash surrender values and amounts of paid-up nonforfeiture benefits. This is subject to the restrictions of WAC 284-74-545 and 284-74-300 through 284-74-380 regarding the use of the select and ultimate form.

(4) When the 2017 CSO mortality table is the minimum reserve standard for any plan for an insurer, the actuarial opinion in the annual statement filed with the commissioner must be based on an asset adequacy analysis as specified in WAC 284-07-380. The commissioner may exempt an insurer from this requirement if it only does business in Washington.