How Medicare Benefit Periods Work and Why They Matter

What a Benefit Period Is

A benefit period is the time span during which Medicare covers your hospital stays and related care. It starts the day you enter a hospital as an inpatient and ends 60 days after you leave — whether you go home, to a nursing facility, or elsewhere. If you return to the hospital within those 60 days, you are still in the same benefit period. If you stay out for 60 consecutive days, that benefit period ends and a new one begins if you are admitted again.

Benefit periods matter because Medicare Part A (hospital insurance) charges you different amounts depending on where you are in the benefit period. Your first hospital stay in a benefit period costs you a deductible. Longer stays cost you a daily coinsurance amount. Understanding where you fall in your benefit period tells you what you will owe out of pocket.

Benefit periods explore only to Part A — hospital and skilled nursing facility care. They do not explore to Part B (doctor visits and outpatient care) or Part D (prescription drugs), which run on calendar years instead.

Key Takeaways

A benefit period runs from the day you enter a hospital until 60 days after you leave, and a new one starts if you return after that 60-day gap.
Your out-of-pocket costs change depending on how many days you have been in the hospital during your current benefit period.
The benefit period applies only to Part A (hospital and skilled nursing care), not to doctor visits or prescriptions.
If you are readmitted within 60 days of leaving the hospital, you stay in the same benefit period and do not pay a new deductible.

How Your Costs Change During a Benefit Period

Medicare Part A charges you based on how many days you have used during your current benefit period. For 2024, the Part A deductible is $1,632 per benefit period — you pay this amount for your first hospital stay. After you pay the deductible, Medicare covers all hospital costs for days 1 through 60.

Days 61 through 90 cost you a daily coinsurance amount (in 2024, $408 per day). If you stay longer than 90 days, Medicare provides what is called a lifetime reserve of 60 additional days you can use across your entire life. Those days cost you a higher daily coinsurance (in 2024, $816 per day). Once you use your lifetime reserve days, you pay all costs yourself.

The dollar amounts change each year. When a new benefit period begins — 60 days after you leave the hospital — your day count resets to zero, and if you are admitted again, you pay a new deductible.

When a Benefit Period Ends and a New One Begins

A benefit period ends automatically 60 days after you are discharged from the hospital. The 60 days do not have to be consecutive days you are out of the hospital — they are 60 calendar days. If you leave on January 10 and do not return by March 10, your benefit period has ended.

If you are readmitted to the hospital on March 11, a new benefit period begins on that day. You will owe a new Part A deductible, and your day counter starts at 1 again. This is why the timing of readmission matters: if you go back within 60 days, you are still in the old benefit period and do not pay another deductible.

Skilled nursing facility (SNF) stays also count toward your benefit period. If you go from the hospital to a nursing home for rehabilitation, those days count as part of the same benefit period. If you leave the nursing home and return to the hospital within 60 days of leaving the hospital (not the nursing home), you are still in the same benefit period.

Skilled Nursing Facility Coverage Within a Benefit Period

Medicare Part A covers skilled nursing facility care only if you were hospitalized for at least three consecutive days first, and only if you are admitted to the SNF within 30 days of leaving the hospital. The SNF stay must be for a condition related to the hospitalization.

For SNF care, you pay no coinsurance for days 1 through 20. Days 21 through 100 cost you a daily coinsurance amount (in 2024, $204 per day). After day 100 in a benefit period, Medicare covers nothing for SNF care. All of this happens within the same benefit period that began when you entered the hospital.

If you need SNF care again in a future benefit period, the day count resets and you start at day 1 with no coinsurance again.

Tracking Your Benefit Period and Days Used

You can find out where you are in your current benefit period by calling Medicare at 1-800-MEDICARE (1-800-633-4227) or by logging into your Medicare account at Medicare.gov. Your hospital or SNF will also tell you how many days you have used and what you owe.

When you receive a hospital bill or a notice from Medicare, it will show your benefit period dates and how many days you have been charged. Keep these documents so you know whether a future admission will be in the same benefit period or a new one.

If you have Original Medicare and are unsure about your costs, ask the hospital billing department before you are discharged. They can tell you what you owe for the current stay and what a readmission would cost if it happens within 60 days.

Benefit Periods and Medicare Advantage Plans

If you have a Medicare Advantage plan (Part C) instead of Original Medicare, the benefit period structure is the same, but your out-of-pocket costs may be different. Medicare Advantage plans must cover at least what Original Medicare covers, but they often have different deductibles, coinsurance amounts, and copays.

Some Medicare Advantage plans charge a copay per day of hospitalization instead of a deductible and coinsurance. Others use the same structure as Original Medicare. Check your plan's Summary of Benefits or call the plan directly to understand your costs during a benefit period.

The 60-day clock and the rules about when a new benefit period begins are the same regardless of whether you have Original Medicare or a Medicare Advantage plan.

What Happens If You Reach Your Lifetime Reserve Days

Your lifetime reserve is 60 days total across your entire life on Medicare. These days are meant as a safety net for very long hospital stays. Once you use them, they are gone — Medicare does not give you more.

If you use all 60 lifetime reserve days and need more hospital care, you pay all costs yourself unless you have supplemental insurance (Medigap). Some Medigap plans cover costs after your Medicare benefits end, which is why people with long-term health conditions sometimes buy supplemental coverage.

You can check how many lifetime reserve days you have used by calling Medicare or checking your online account. If you are approaching the end of your reserve days and expect to need more hospital care, talk to your doctor about outpatient options or ask about Medigap plans that might help cover future costs.

Frequently Asked Questions

Do I pay a new deductible if I am readmitted to the hospital within 60 days?

No. If you return to the hospital within 60 days of leaving, you are still in the same benefit period and do not owe another deductible. You will owe coinsurance for days 61 and beyond, but not a new deductible. The deductible applies only once per benefit period.

What counts as a hospital discharge for the 60-day clock?

A discharge is when you leave the hospital, whether you go home, to a nursing facility, to a rehabilitation center, or anywhere else. The 60 days start counting from that day. If you go to a nursing home directly from the hospital, the 60-day clock still starts from when you left the hospital, not from when you leave the nursing home.

Can I use my lifetime reserve days in more than one benefit period?

Yes. Your 60 lifetime reserve days are a total pool you can draw from across your entire life. You might use 10 days in one benefit period and 15 days in another. Once all 60 are used, they are gone. They do not reset each year or each benefit period.

If I have a Medicare Advantage plan, do benefit periods work the same way?

The benefit period structure — the 60-day clock and when a new period begins — is the same. Your out-of-pocket costs may be different because Medicare Advantage plans set their own deductibles and coinsurance amounts. Check your plan documents to see what you will owe during a hospital stay.

How do I know when my current benefit period will end?

Add 60 days to the date you left the hospital. That is when your benefit period ends. If you have not been readmitted by that date, a new benefit period will begin if you are admitted. You can also call Medicare at 1-800-633-4227 to ask what date your current benefit period ends.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.