The main purpose of this legislation, known as the Medicare Beneficiary Co-Pay Fairness Act, is to reduce the financial burden on Medicare beneficiaries who receive certain services in ambulatory surgical centers. The objective is to ensure that the out-of-pocket costs, specifically the coinsurance amounts, do not exceed the deductible amount that patients would pay for inpatient hospital services. The key provisions of this law include a specific limitation on coinsurance amounts for facility services provided in ambulatory surgical centers.