Which of the following is NOT covered by Medicare Part A?

Medicare Part A primarily covers inpatient hospital stays, care in skilled nursing facilities, hospice care, and some home health care services. However, it does not cover all medical services and preventative care.

Flu shots and preventive services, such as vaccinations and certain screenings, are typically covered under Medicare Part B, not Part A. Therefore, selecting the option related to flu shots and preventive services aligns with the fact that these services are outside the scope of what Part A provides. Part A focuses mainly on direct medical care and stays, rather than preventive measures and outpatient services, which are deferred to Part B.

The other options, involving skilled nursing facility care, home health aide services, and room and board in a hospital, are indeed covered by Medicare Part A under specific circumstances, reflecting its focus on inpatient and rehabilitative care. This delineation underscores the importance of understanding which specific services fall under the different parts of Medicare, as it influences the availability and type of health care services seniors can access.