How long does Medicare pay for rehab after a hospital stay in Peoria, AZ?

Up to 100 days per benefit period in a skilled nursing facility — and every word in that sentence is doing work. The first 20 days are paid in full. Days 21 through 100 cost you $217 a day in 2026. Day 101 is entirely yours. None of it starts unless you were a hospital inpatient for three days in a row first, and it stops the day you no longer need daily skilled care, which for most people is long before day 100.

That is the answer for a stay in a skilled nursing facility, which is what most people mean when they say “rehab.” But “rehab” is three different things to Medicare, paid on three different rules, and a north Peoria household coming out of Banner Thunderbird or Abrazo Arrowhead is usually told which one it is getting about an hour before it happens. Here is how the days count, the two myths that cost people the most, what a Medicare Advantage plan changes, and what to check on your Annual Notice of Change before December 7.

“Rehab” is three different things

The word covers three settings, and the bill depends on which one you land in.

Source: Medicare.gov, "Skilled nursing facility (SNF) care" and "Inpatient rehabilitation care," 2026 amounts. Medicare Advantage plans set their own cost sharing for each setting.

Two things to take from that table. The 100-day question only applies to the first row. An inpatient rehab hospital is paid like a hospital, and outpatient therapy has no day cap at all — it has a documentation threshold your therapist attests past, which is paperwork, not a stop. And the three settings have three different entry rules. A rehab hospital has to certify that you need intensive therapy with a physician supervising it. A skilled nursing facility has to be reached through the three-day rule, which is where most of the trouble starts.

The 100 days, day by day

For the skilled nursing facility, here is the 2026 arithmetic on Original Medicare.

Source: Medicare.gov, "Skilled nursing facility (SNF) care," 2026 amounts. A Medicare Supplement Plan G or Plan N pays the days 21–100 coinsurance in full.

The word to hold onto is benefit period, because it is not a calendar year. A benefit period starts the day you are admitted as an inpatient and ends only after you have been out of every hospital and skilled nursing facility for 60 consecutive days. Three consequences:

• The 100 days do not reset on January 1. They reset when a new benefit period starts, which needs the 60-day break and then a fresh three-day inpatient stay.
• A new benefit period means a new $1,736 deductible. Two separate admissions far enough apart in one year are two deductibles. The out-of-pocket costs explainer works through that.
• Leaving the facility and coming back inside the 60 days continues the same count. Day 14, home for three weeks, back in — the clock picks up at day 15, not day 1.

And the ceiling is not a promise. Medicare pays for days you need daily skilled nursing or therapy that can only be safely delivered by skilled staff. The moment that stops being true, coverage stops, whether that is day 9 or day 60. The 100 days are the outer edge of the benefit, not the length of it.

The three-day rule, and why observation nights do not count

To reach the skilled nursing benefit at all, you must have been a hospital inpatient for at least three days in a row, counting the day of admission but not the day of discharge, and enter the facility within about 30 days of leaving.

The trap is the word inpatient. Hospitals now hold a great many Medicare patients under observation status, an outpatient classification, sometimes for several nights. You are in a bed, on a ward, being treated, and none of it counts toward the three days. A person can spend four nights in a hospital, be sent to a skilled nursing facility for rehab, and discover the facility is billing them privately from day one because Part A was never triggered. I have written about what an observation stay does to your bill and how the same word decides rehab after a knee replacement, and the short version is the same in both: ask the hospital, in writing, whether you are an inpatient, and ask on the first day, not the last.

“You have plateaued” is not a reason to stop

This is the second myth, and it costs people more than the first.

For years facilities told patients that Medicare would stop paying once they stopped improving. That was never the rule, and a 2013 federal court settlement called Jimmo v. Sebelius made CMS say so in writing. Medicare’s own coverage manual now states that skilled nursing and therapy are covered where they are necessary to maintain the patient’s current condition or prevent or slow further deterioration, for as long as the person requires skilled care. Coverage turns on the need for skilled care, not on the presence of improvement.

So if you or a parent are in a facility in Peoria or Sun City and the discharge planner says coverage is ending because there has been no progress, that alone is not a lawful reason. What to do:

1. Ask for the Notice of Medicare Non-Coverage in writing. The facility must deliver it at least two days before covered care ends. It names the date and the Quality Improvement Organization that hears the appeal.
2. File the fast appeal by the deadline on the notice. It is a phone call, and while it is pending you are not billed for the days in dispute.
3. Ask the question in Medicare’s words. Not “is he improving?” but “does he still need daily skilled nursing or therapy that only skilled staff can safely deliver?” If the answer is yes, coverage should continue.

The improvement standard is dead on paper and alive in practice. Knowing that it is dead is worth several thousand dollars a week.

What a Medicare Advantage plan does differently

A Medicare Advantage plan must cover at least what Original Medicare covers, including skilled nursing care. It does not have to cover it the same way, and around Peoria the differences show up in four places.

The three-day rule may be waived. Many plans hold CMS approval to drop it, so a shorter stay, or a direct admission from home, can still be covered. Each plan decides, and the Evidence of Coverage says which.

The copay is the plan’s, not Medicare’s. Medicare’s rules allow a plan to charge a per-day copay during the first 20 days, and many plans charge a schedule of their own from day one, in place of the $0-then-$217 structure above. Whether that is better or worse than Original Medicare depends on the length of the stay, and it changes every January.

Prior authorization is close to universal. KFF found that in 2026, 95 percent of Medicare Advantage enrollees are in plans requiring prior authorization for skilled nursing facility stays. In its review of 2024 determinations, requests for skilled nursing stays were denied at about 12 percent, well above the 7.7 percent rate for all requests — and of the denials that were appealed, 80.7 percent were overturned in full or in part. A denial is the first round, not the verdict. Appeal it, and ask the hospital’s case manager for a peer-to-peer review while you do.

The facility must be in network. The hospital being in network does not put the post-acute facility down the road in network. The Advantage networks explainer covers why those are separate contracts.

On a Medicare Supplement with Original Medicare, none of these four apply: no prior authorization, no network, and Plan G or Plan N pays the days 21–100 coinsurance in full. That is the trade a lot of Vistancia and Trilogy households are actually weighing when they compare the two, and the Plan G versus Plan N piece walks through the rest of it.

Why this lands differently in north Peoria

Three things about this end of the Valley sharpen the question.

The geography is spread out. A north Peoria hospital stay tends to happen at Banner Thunderbird, Abrazo Arrowhead or HonorHealth’s Peoria campus, and the post-acute facilities are concentrated down the 101 and across into Sun City and Sun City West, where a large share of them are built around Medicare patients. The hospital your ambulance went to, the facility with an open bed, and the one your family can reach every day are frequently three different points on the map. On an Advantage plan, each is a separate network question. On the Peoria–Glendale–Sun City ZIP seam, a facility a mile from your house can sit on the other side of a contract line. Medicare in Peoria and Medicare in Glendale have the local picture for each side.

The seasonal residents. Trilogy at Vistancia and Westbrook Village hold a lot of households that spend four months of the year out of state. A fall in July in another state is an emergency, which every plan covers, but the three weeks of rehab afterward are post-acute care, and an HMO covers that outside its service area only if it approves it. Original Medicare with a Supplement works in any facility in the country that takes Medicare. If you split the year, that difference is a bigger deal than the premium.

The recent arrivals. The 85383 corridor is full of people who moved in the last few years and are still on a plan they bought in another state. If that plan is an Advantage plan, its network, its rehab copay schedule and its prior authorization rules were all built for the county they left. Worth a look before you need it rather than after.

After day 100: the conversation Medicare does not have with you

Everything above is about skilled care — therapy and nursing that only trained staff can deliver. When a person still needs help after the skilled need ends, with bathing, dressing, meals and getting safely from a chair to a bed, that is custodial care, and Medicare does not pay for it in any setting, on any plan, for any number of days. The what Medicare does not pay for explainer is the fuller treatment.

In Arizona the 2025 median for a semi-private nursing home room is $8,365 a month, and a private room $11,437. Those are survey medians, not quotes, and the cost-of-care estimator lets you run them against a stay of any length. For a household with assets to protect, that gap is what long-term care planning exists for, whether through a traditional or hybrid policy or simply a decision about what would be sold to pay for it. That is an education conversation, not a rate quote, and it is worth having with a licensed professional while the answer is still optional.

What to check before December 7

The rehab copay row is one of the easiest things on an Annual Notice of Change to skip over, because nobody plans on needing it. Three things to do in the Annual Enrollment Period:

1. Find the skilled nursing facility line on your ANOC and compare the 2027 per-day schedule to 2026. A plan that moved from $0 for the first 20 days to a daily copay from day one has changed what a hospital stay costs you, and no separate letter says so.
2. Check whether the plan waives the three-day rule, and whether the post-acute facilities near you are in its network by name. The ANOC walkthrough covers where each of those hides.
3. If you split the year or are still on an out-of-state plan, put the Supplement question on the table now. Arizona has no birthday rule making it easy to move into one later; the switching from Advantage to Medigap piece explains when the door is open.

The short version

• Up to 100 days per benefit period in a skilled nursing facility. $0 for days 1–20, $217 a day for days 21–100, everything from day 101.
• “Up to” is the operative phrase. Coverage lasts as long as you need daily skilled care, and most stays end well before the ceiling.
• A benefit period is not a calendar year. It ends after 60 consecutive days out of any hospital or facility, and a new one means a new $1,736 deductible.
• You need three consecutive inpatient days first. Observation nights do not count. Ask on day one whether you are an inpatient.
• “You have plateaued” is not a lawful reason to stop. Skilled care to maintain a condition is covered. Get the non-coverage notice in writing and file the fast appeal.
• A rehab hospital is billed as hospital days, and outpatient therapy has no day limit. Only the skilled nursing facility carries the 100-day rule.
• Medicare Advantage may waive the three-day rule, charges its own per-day copay, nearly always requires prior authorization, and needs the facility in network. Original Medicare with Plan G or Plan N has none of those and pays the coinsurance in full.
• Past day 100, or once the skilled need ends, it is custodial care and Medicare pays nothing. That is what long-term care planning is for.

If you would rather have someone check it for you

Nobody reads the rehab rules until they are standing in a hospital corridor, which is the worst place to learn them. The review is free and takes about twenty minutes: which plan you are on, what its skilled nursing schedule and network actually say, whether the facilities you would realistically use are inside it, and whether your household’s shape — seasonal, recently arrived, or twenty years with the same doctor in 85345 — points toward a different answer.

The office is in Anthem, roughly 25 minutes from north Peoria out the Carefree Highway and down Lake Pleasant Parkway, and most of this happens by phone anyway. Call (602) 844-6002 or book a time — and if you call or text, that is your consent for me to reply the same way.

And if someone you love is in a facility right now and has just been told coverage ends Friday because they are not improving: ask for the notice in writing, and make the call on it. That one sentence is the most valuable thing on this page.