liable to the emergency services provider for any amount for such services other than the applicable copayment, coinsurance, or deductible amount required under the plan for covered emergency services. Emergency service providers shall not balance bill a participant or beneficiary under a self-insured group health plan for any covered emergency services provided to such participant or beneficiary. (2) Cost sharing limitation and prior authorization If a self-insured group health plan provides coverage for any benefits with respect to emergency services, such coverage shall be in accordance with the provisions of section 2719A(b) of the Public Health Service Act and— (A) if such services are provided by an out-of-network provider, the cost-sharing requirements (including any deductible amount and the out-of-pocket limit) applicable to such services shall be the same as the cost-sharing requirement that would apply if such services were provided by an in-network provider