CA AB577

Prohibits health care service plans, health insurers, and pharmacy benefit managers from requiring enrollees to self-administer injected or infused medications when an in-network provider determines administration by a health care provider is medically necessary

Bans plans and insurers from mandating specific in-network providers, infusion centers, or mail order pharmacies for medication administration when a patient's current in-network provider determines it is medically necessary to administer the medication themselves

Prevents insurers from imposing higher cost-sharing requirements for covered injected/infused medications administered at in-network physician offices, clinics, or infusion centers compared to medications furnished through mail order pharmacies

Prohibits discrimination against in-network physicians who dispense prescription oral medications, including contract terms designed to discourage dispensing, refusal to contract, contract termination, or retaliation

Requires health care providers to obtain patient consent and disclose a good faith estimate of cost-sharing before administering medications in a different setting or manner than directed by the plan or insurer; applies to contracts issued, amended, or renewed on or after January 1, 2026