An issuer and an employee welfare benefit plan, whether insured or self funded, as defined in the employee retirement income security act of 1974, 29 U.S.C. § 1101 et seq. may not consider the availability of eligibility for medical assistance in this state under medical assistance, RCW 74.09.500, or any other state under 42 U.S.C. § 1396a, section 1902 of the social security act, in considering eligibility for coverage or making payments under its plan for eligible enrollees, subscribers, policyholders, or certificate holders.