What is the percentage of covered charges an insured must pay under Medicare Part B after the deductible?

The correct answer is 20%. Under Medicare Part B, after the insured meets their deductible, they are typically responsible for 20% of the covered charges for healthcare services. This percentage applies to various outpatient services, including doctor visits, preventive care, and diagnostic tests. The remaining 80% of the covered charges is paid by Medicare Part B. This coinsurance structure is designed to share costs between the insured and Medicare, promoting responsible use of healthcare services while ensuring that beneficiaries have access to necessary medical care.