Medicare's Coverage Window for Long-Term Acute Care

Medicare does not set a fixed number of days it will pay for long-term acute care (LTAC) hospital stays. Instead, it covers medically necessary care for as long as your condition requires it — but only if you meet specific criteria and stay in a facility Medicare recognizes as an LTAC hospital.

The practical limit comes from two places: the medical review process and the facility's own billing practices. Medicare's utilization review contractor will examine your case periodically to confirm the care you are receiving cannot be provided in a regular hospital or skilled nursing facility. If the reviewer decides you no longer need LTAC-level care, Medicare stops paying — regardless of how many days have passed.

Most LTAC stays last between 25 and 40 days, though some patients stay longer and others are discharged sooner. The length depends entirely on your medical condition, not on a calendar rule.

Key Takeaways

  • Medicare covers LTAC stays based on medical necessity, not a set number of days, and a utilization review can end coverage if your condition improves.
  • You must be admitted to an LTAC hospital — a facility with a specific Medicare designation — for any days to be covered at all.
  • Most LTAC stays run 25 to 40 days, but your individual stay length depends on your diagnosis and recovery progress.
  • You pay a copay for each day of care (the Part A hospital deductible applies to the first day), and this cost continues for every day Medicare covers.
  • If you disagree with a coverage denial, you have the right to request a detailed explanation and can appeal through Medicare's formal process.

What Qualifies as an LTAC Hospital Under Medicare

An LTAC hospital is not a regular hospital or a nursing home. It is a specialty facility licensed by Medicare with specific staffing, equipment, and clinical protocols designed for patients who need intensive care but are medically stable enough to leave an acute care hospital.

Medicare recognizes LTAC hospitals by their provider number and certification status. Your discharge planner or hospital social worker can confirm whether a facility you are considering is Medicare-certified. If it is not, Medicare will not cover your stay there, even if the facility calls itself a long-term acute care center.

Common reasons patients are admitted to LTAC hospitals include recovery from sepsis, complex wound care, mechanical ventilation weaning, or management of multiple organ complications after surgery. The facility must document that your condition requires daily physician oversight, specialized nursing, and equipment that a skilled nursing facility cannot provide.

How Medicare Reviews Your Stay and Decides When to Stop Paying

Medicare assigns a utilization review contractor to examine LTAC cases. This contractor typically reviews your chart within the first few days of admission and then periodically throughout your stay — often around day 7, day 14, and day 21, though timing varies.

The reviewer looks at your diagnosis, your current medical status, the treatments you are receiving, and whether those treatments require LTAC-level care. If the reviewer determines you have improved enough to move to a skilled nursing facility or return home with home health services, they will notify the hospital that Medicare coverage will end on a specific date.

You and your doctor will receive written notice of this decision. If you disagree, you can request a detailed explanation and file an appeal. The appeal process is separate from your discharge planning, so you can appeal while also preparing to move to another level of care.

Your Out-of-Pocket Costs During an LTAC Stay

For each day of an LTAC stay, you pay a copay under Medicare Part A. The amount changes yearly; in 2024, the daily copay is $408 for days 1 through 60 of any hospital stay in a benefit period (the copay applies whether you are in a regular hospital or an LTAC hospital).

If your LTAC stay is your first hospital admission in a benefit period, you also pay the Part A deductible on day one — currently $1,632 in 2024. After you have paid the deductible and copays for 60 days, Medicare covers 100 percent of covered services for days 61 through 90 (though few LTAC stays extend that long).

These costs continue for every day Medicare covers, so a 30-day LTAC stay would cost you approximately $12,240 in copays alone, plus the deductible if it is your first hospital stay of the year. Supplemental insurance (Medigap) or a Medicare Advantage plan may cover some or all of these costs depending on your policy.

What Happens When Medicare Stops Paying

When Medicare's utilization review determines your stay is no longer medically necessary, the LTAC hospital must give you written notice at least two days before coverage ends. This notice must explain why Medicare is stopping payment and inform you of your appeal rights.

On the day coverage ends, you become responsible for all charges if you remain in the facility. Some patients continue their stay and pay out of pocket; others are discharged to a skilled nursing facility, home health care, or home. Your care team should help you plan the transition before the coverage end date arrives.

If you stay in the LTAC hospital after Medicare stops paying and you did not formally appeal the decision, you are liable for the full daily rate — often $1,500 to $3,000 per day or more, depending on the facility. This is why understanding your appeal rights and acting quickly is important.

Appealing a Medicare Coverage Denial for LTAC Care

If you receive notice that Medicare will stop paying for your LTAC stay, you have the right to appeal. The first step is to request a detailed written explanation from the utilization review contractor explaining exactly why they believe your care is no longer medically necessary.

You can then file a formal appeal with Medicare. Your doctor or the hospital's patient advocate can help you gather medical records and write a statement supporting the medical necessity of continued LTAC care. The appeal must be filed before the coverage end date or within a short window after, so do not delay.

During the appeal process, you are not responsible for charges if you remain in the facility — Medicare continues to pay while your case is under review. If the appeal is denied, you can request a higher level of review, though the process takes time and the outcome is not may provide.

Alternatives if LTAC Coverage Ends or Is Not Available

If Medicare stops paying for LTAC care or you cannot access an LTAC hospital, skilled nursing facility (SNF) care may be an option. Medicare covers SNF stays for up to 100 days in a benefit period if you meet the admission criteria (usually a hospital stay of at least three days first).

Home health care is another path. If your doctor orders home health services and you are homebound, Medicare covers skilled nursing visits, physical therapy, and other services at no daily copay — only a 20 percent copay on equipment rentals.

Some patients also transition to outpatient rehabilitation programs or continue care through their primary doctor and specialists. Your discharge planner should discuss all available options before your LTAC coverage ends.

Frequently Asked Questions

Does Medicare have a maximum number of days it will pay for LTAC?

No. Medicare covers medically necessary LTAC care for as long as it is needed, with no preset day limit. Coverage ends when a utilization reviewer determines you no longer require LTAC-level care, which could be day 10 or day 60 depending on your condition.

What if I improve quickly — can Medicare stop paying after just a few days?

Yes. If your condition improves rapidly and a reviewer determines you can safely receive care in a skilled nursing facility or at home, Medicare can end LTAC coverage after a short stay. You will receive written notice and can appeal if you disagree.

Do I have to pay anything while I am in an LTAC hospital?

Yes. You pay a daily copay under Part A (currently $408 per day in 2024) and the Part A deductible ($1,632 in 2024) if it is your first hospital stay in the benefit period. Supplemental insurance may cover these costs depending on your policy.

Can I stay in an LTAC hospital even after Medicare stops paying?

Yes, but you become responsible for the full daily cost, which is typically $1,500 to $3,000 or more per day. Before you agree to stay, confirm the exact daily rate with the facility's billing department and understand your financial obligation.

What should I do if I disagree with a coverage denial?

Request a written explanation from the utilization review contractor, then file a formal appeal with Medicare. Your doctor or hospital patient advocate can help. During the appeal, Medicare continues to pay if you remain in the facility, so you are not liable for charges while your case is reviewed.