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Medical Expense✓ Verified · outline & fact-checked · Sep 2026Difficulty 1/5

Which of the following services is covered under Medicare Part B?

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Answer & full 3-part explanation (select an option above, or peek)

Why A is correct

Medicare Part B (Medical Insurance) covers medically necessary outpatient health and diagnostic services, physician and surgeon services whether furnished in or out of the hospital, and certain home health services not covered under Part A. Because professional fees are Part B benefits, a beneficiary's doctor bills are paid under Part B even during an inpatient stay that is otherwise covered by Part A. This scope of Part B benefits is expressly identified in the objectives under AH-III.D.1d, and distinguishing Part B professional services from Part A facility services is a core testing point.

Why the other options are wrong

  • B) Semi-private room and board in an inpatient stay are Part A hospital benefits, not Part B services.
  • C) Custodial, non-skilled nursing care is not a covered Medicare benefit under Part A or Part B.
  • D) Inpatient psychiatric hospitalization is a Part A benefit subject to its own lifetime limitation, not a Part B service.

Memory hook

Part B = doctors and outpatient care; Part A = the hospital bed.

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