What is the significance of the 'two-midnight rule' under Medicare?
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A
Patients must be observed for two midnights before being eligible for Medicare Part A benefits
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B
A physician must document an expectation of a hospital stay spanning two midnights to justify inpatient admission under Part A
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C
Medicare will only pay for the first two midnight hours of an ER visit
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D
Inpatient rehabilitation requires a two-midnight qualifying stay in acute care