Which of the following services is NOT covered under Medicare Part A?

Medicare Part A primarily covers inpatient services, which include care received in hospitals, skilled nursing facilities, hospice, and some home health care, but it does not cover outpatient services or prescription drugs. The absence of coverage for prescription drugs under Part A is an important distinction, as prescription drug coverage is instead offered through Medicare Part D or Medicare Advantage plans that include drug coverage. Understanding this separation is crucial for navigating Medicare benefits effectively, as it helps beneficiaries identify where they need to seek additional coverage when it comes to medication costs. Thus, prescription drugs are not considered a service provided by Medicare Part A, making that selection the correct answer.