Medicare Hospital Coverage: What Medicare Pays for Hospital Stays

Understanding what Medicare covers during a hospital stay helps you plan for potential out-of-pocket costs and avoid surprises. Here's a comprehensive guide to Medicare hospital coverage under Part A.

Medicare Part A: Hospital Insurance

Medicare Part A covers inpatient hospital stays, including:

• Semi-private room and board
• General nursing care
• Meals
• Medications administered during your stay
• Lab tests and diagnostic procedures
• Operating and recovery room costs
• Mental health inpatient care
• Medical supplies and equipment used during your stay

What Medicare Part A Does NOT Cover

• Private room (unless medically necessary)
• Private-duty nursing
• Television and telephone charges
• Personal convenience items
• First 3 pints of blood (unless donated or replaced)

Medicare Part A Costs (Benefit Period)

Medicare measures hospital coverage in "benefit periods." A benefit period begins when you're admitted and ends when you haven't received inpatient care for 60 consecutive days:

• Days 1-60: You pay the inpatient deductible (updated annually by CMS)
• Days 61-90: You pay a daily coinsurance amount
• Days 91+: You can use "lifetime reserve days" (60 total, non-renewable) with a higher daily coinsurance
• Beyond lifetime reserve days: You pay all costs

For current deductible and coinsurance amounts, visit medicare.gov.

Observation vs. Inpatient Admission

This distinction is critical for Medicare coverage:

• Inpatient admission: Covered under Part A with the cost structure above
• Observation status: Covered under Part B (outpatient), which means different cost-sharing and no coverage for follow-up skilled nursing facility care
• You have the right to know your status: The NOTICE Act requires hospitals to inform you if you've been in observation for more than 24 hours

Medicare Part B Hospital Services

Part B covers outpatient hospital services, including:

• Emergency room visits (facility charges)
• Outpatient surgery
• Diagnostic tests and lab work
• Mental health services
• Observation stays
• Physical, occupational, and speech therapy

Medicare Advantage (Part C)

• Medicare Advantage plans must cover everything Original Medicare covers
• Cost-sharing may differ from Original Medicare
• Most plans have provider networks — check if your hospital is in-network
• Some plans offer additional benefits

Medigap (Medicare Supplement Insurance)

• Medigap policies can help pay Medicare cost-sharing (deductibles, coinsurance)
• Only works with Original Medicare, not Medicare Advantage
• Different plan types cover different costs

Tips for Medicare Beneficiaries

• Always carry your Medicare card or plan information when visiting a hospital
• Ask if the hospital participates in Medicare before non-emergency care
• Confirm whether you're being admitted as inpatient or placed in observation
• Review your Medicare Summary Notice (MSN) after receiving care
• Call 1-800-MEDICARE with billing questions or concerns

Data sourced from CMS. Visit Medicare Care Compare or call 1-800-MEDICARE (1-800-633-4227).

Disclaimer: This article is for informational purposes only and does not constitute insurance or legal advice. Verify coverage details at medicare.gov.