Final answer:
Medicare Part B provides outpatient insurance coverage for health-care costs outside of hospital stays.
Step-by-step explanation:
Part B of Medicare is the service plan that provides outpatient insurance. It is an optional insurance system that covers health-care costs for physician services, medical tests, and outpatient visits. Participants in Part B pay a monthly fee, deductible charges, and copayments, while the government contributes about three-fourths of the overall costs.