(1) Each health plan issued or renewed on or after January 1, 2012, that provides coverage for cancer chemotherapy treatment must provide coverage for prescribed, self-administered anticancer medication that is used to kill or slow the growth of cancerous cells on a basis at least comparable to cancer chemotherapy medications administered by a health care provider or facility as defined in *RCW 48.43.005 (25) and (26).
(2) Nothing in this section may be interpreted to prohibit a health plan from administering a formulary or preferred drug list, requiring prior authorization, or imposing other appropriate utilization controls in approving coverage for any chemotherapy.