Modifies provisions relating to payments for prescription drugs

HB 2645 limits how pharmacy benefits managers (PBMs) can charge patients for prescription drugs. It prohibits PBMs from requiring patients to pay more at checkout than the cash price or their insurance copayment, and allows pharmacists to discuss cheaper drug alternatives without PBM restrictions. The bill also requires PBMs to disclose conflicts of interest to health plans and prohibits them from holding pharmacies responsible for unknown claim fees. It excludes Medicare Part D and self-funded employer health plans from these rules. The law applies to all other health benefit plans and pharmacy claims in the state.