The short answer
Inpatient rehab, skilled nursing and home health are three separate Medicare benefits with three separate tests. Rehab needs 3 hours of therapy a day. Skilled nursing needs a 3-day inpatient hospital stay and stops at 100 days. Home health needs a skilled need plus homebound status, and never covers someone in the house all day.
These are three Medicare benefits, not three grades of one service. Each has its own eligibility test, its own time limit and its own bill.
The skilled nursing 3-day rule counts inpatient nights only. Observation status and emergency department time do not count.
Compare how much therapy and nursing support each setting actually provides.
Confirm eligibility and cost with the insurer or program; names do not guarantee coverage.
Choose how you want to understand this
The full explanation.
"Rehab," "skilled nursing," and "home health" get used as if they were three grades of the same service. They are not. They are three separate Medicare benefits with three separate rule books. Each one has its own test for who qualifies, its own limit on how long it lasts, and its own bill.
After cancer surgery, a long hospital stay, or a sharp drop in strength, a case manager will suggest one of them. Knowing what separates them changes the conversation.
Inpatient rehabilitation: the most intense setting
An inpatient rehabilitation facility, or IRF, is a hospital or a unit inside a hospital. It is for people who need heavy therapy and close doctor care at the same time.
Medicare's rules here are strict and specific. To be admitted, the patient must be able to take part in at least 3 hours of therapy a day, at least 5 days a week. There is a second option: at least 15 hours of therapy across 7 days in a row. A rehabilitation doctor must see the patient face to face at least 3 days a week for the whole stay. A clinician must complete a screening in the 48 hours before admission. The rehabilitation doctor writes the plan of care within 4 days of admission, using input from the team.
Read that first rule again. IRF is the wrong setting for a person who is too weak or too nauseated to work 3 hours a day. Many people after chemotherapy or a big abdominal operation are not there yet.
Under Part A in 2026, you pay a $1,736 deductible for days 1 through 60, then $434 a day for days 61 through 90. You do not pay the deductible twice if it was already charged for a hospital stay in the same benefit period, or if you transfer straight from an acute care hospital.
Skilled nursing facility: the 3-day rule and the 100-day wall
A skilled nursing facility, or SNF, provides nursing care and therapy in a residential building. The intensity rules above belong to inpatient rehab and do not apply here. What Medicare asks instead is whether you need daily skilled care.
Part A pays for SNF care only when all of these are true:
- You had a medically necessary inpatient hospital stay of at least 3 days in a row.
- You enter a Medicare-certified SNF within about 30 days of leaving the hospital.
- Your doctor says you need daily skilled care.
- You have Part A benefit days left.
The 3-day rule is where families get hurt. Time spent under observation status does not count. Time in the emergency department does not count. A person can sleep four nights in a hospital bed and still fail this test, because they were never formally admitted as an inpatient. Ask the hospital directly, and early: is this stay inpatient or observation? If the answer is observation, ask whether the status can be changed, and ask what it means for the skilled nursing plan.
Medicare covers a semi-private room, meals, skilled nursing, physical, occupational and speech therapy as needed, medicines, supplies, medical social services, ambulance transport when medically necessary, and dietary counseling.
In 2026 you pay nothing per day for days 1 through 20, after the $1,736 Part A deductible — and you do not pay that deductible again if it was already charged for hospital care in the same benefit period. You pay $217 a day for days 21 through 100. On day 101 of a benefit period, Medicare stops and you pay everything. Coverage is capped at 100 days per benefit period.
If the patient has a Medicare Advantage plan, the amounts can be different. Call the plan before the transfer, not after it.
Home health: the homebound test
Home health is the lightest of the three, and the one people most often picture wrongly. A nurse or a therapist drives to the house for a visit and then leaves. Nobody stays over.
Two things must be true.
First, a skilled need. You must need part-time or intermittent skilled care. That means skilled nursing, physical therapy, occupational therapy, or speech-language pathology, which is therapy for speech and swallowing.
Second, homebound status. Homebound does not mean bedbound. Medicare's test is that leaving home is not recommended because of your condition, or that you cannot leave without help, such as a cane, a walker, a wheelchair, or another person. Leaving must take a lot of effort. You can still go to medical appointments, religious services, and adult day care and remain homebound.
Covered services include skilled nursing such as wound care for a surgical wound or a pressure sore, monitoring of a serious and unstable condition, physical and occupational therapy, speech-language pathology, medical social services, durable medical equipment and supplies, and a home health aide who helps with bathing, grooming, walking, and feeding. The aide only comes if you are also getting skilled care.
You pay nothing for covered home health visits. For durable medical equipment, you pay 20% of the Medicare-approved amount after the Part B deductible.
The gap nobody mentions until discharge day
Medicare home health does not pay for:
- 24-hour care at home
- Meals delivered to the home
- Homemaker services such as shopping and cleaning, when they are not part of the care plan
- Custodial care, meaning help with bathing, dressing, and the bathroom, when that is the only care needed
If the real need is a person in the house all day, none of these three benefits supplies it. That is a different problem with different answers: family, privately paid aides, a long-term care insurance policy, state Medicaid home and community-based services, or a residential setting.
Say this out loud in the discharge meeting. "Nobody will be home from 8 to 6" is a planning fact, not a complaint.
Who actually decides
Three separate parties have to line up.
- A doctor certifies the level of care. Nothing starts without it.
- The hospital case manager or discharge planner makes the referral and gives you the list of facilities and agencies.
- The receiving facility or agency accepts or declines. A skilled nursing facility can refuse a referral over complex wound care, IV medicines, staffing, or no open bed.
You pick from the places that will take you. Ask for the list in writing. Ask which ones have a bed today, which take this insurance, and which have experience with cancer patients on active treatment.
If coverage ends before you are ready
This happens often, and there is a real appeal built for it.
Before covered services end in a skilled nursing facility, home health agency, or comprehensive outpatient rehabilitation facility, you must be handed a Notice of Medicare Non-Coverage at least 2 days ahead. To appeal, call the Beneficiary and Family Centered Care Quality Improvement Organization, or BFCC-QIO, listed on that notice. Call by noon the day before the end date on the notice. The BFCC-QIO decides by close of business the day after it receives the information it needs.
A hospital works differently. There you get a notice called An Important Message from Medicare about Your Rights, within 2 days of admission and again before discharge. Ask for review no later than your planned discharge day. The decision comes within one day of the reviewer getting the information. If you meet that deadline, you can stay in the hospital while you wait and you are not billed for that time.
Fast appeals also apply to hospice.
Questions worth asking before you agree
- Is this hospital stay inpatient or observation, and on what date did inpatient status start?
- How many hours of therapy a day will this specific facility deliver, and by which professions?
- Can the patient sustain 3 hours a day right now, or should we aim lower and step up later?
- Which places on this list have a bed and accept this plan?
- What is the plan for day 21 in a skilled nursing facility, and for day 101?
- With home health, how many visits per week and for how many weeks are ordered?
- Who orders the hospital bed, commode, walker, and oxygen, and when do they arrive?
- What do we do if the caregiver cannot manage by week two?
Sources
- Skilled nursing facility (SNF) care — Medicare.gov
- Home health services — Medicare.gov
- Inpatient rehabilitation care — Medicare.gov
- Inpatient Rehabilitation Hospitals and Inpatient Rehabilitation Units: compliance tips — Centers for Medicare & Medicaid Services
- Fast appeals — Medicare.gov
- Your Discharge Planning Checklist — Centers for Medicare & Medicaid Services
Words to know
Tap any term to see what it means.

Common questions
What is the difference between inpatient rehab, skilled nursing and home health?
They are three separate Medicare benefits with three separate rule books, each with its own test for who qualifies, its own limit on length, and its own bill. Inpatient rehab is the most intense, in a hospital setting, for people who can take part in at least 3 hours of therapy a day. A skilled nursing facility provides daily skilled nursing and therapy in a residential building. Home health is the lightest: a nurse or therapist visits the house and then leaves.
Why did Medicare refuse to pay for the skilled nursing facility?
Usually the 3-day rule. Part A pays for skilled nursing care only after a medically necessary inpatient hospital stay of at least 3 days in a row. Time spent under observation status or in the emergency department does not count, so someone can sleep four nights in a hospital bed and still fail the test. Ask the hospital directly and early whether the stay is inpatient or observation.
Does homebound mean I cannot leave the house at all?
No. Medicare's test is that leaving home is not recommended because of your condition, or that you cannot leave without help such as a cane, walker, wheelchair or another person, and that leaving takes a lot of effort. You can still go to medical appointments, religious services and adult day care and remain homebound.
Will home health provide someone in the house all day?
No. Medicare home health does not pay for 24-hour care at home, delivered meals, homemaker services outside the care plan, or custodial care when that is the only care needed. If the real need is a person in the house all day, that is a different problem with different answers: family, privately paid aides, long-term care insurance, state Medicaid home and community-based services, or a residential setting. Say it out loud in the discharge meeting.
What can I do if coverage ends before we are ready?
There is a fast appeal built for exactly this. Before covered services end in a skilled nursing facility, home health agency or comprehensive outpatient rehabilitation facility, you must be handed a Notice of Medicare Non-Coverage at least 2 days ahead. Call the BFCC-QIO listed on that notice by noon the day before the end date, and it decides by close of business the day after it receives what it needs.
Questions to ask your doctor
Being prepared helps you get the most out of your appointments. Save or print these questions.
Tap a question to save it to your list (kept on this device).
Your next step
Turn this guide into a short list for your care team.
Speak With Trained Specialists & Human Navigators
Cancer Explained provides educational guidance, but does not replace trained specialists, social workers, or your medical team.
Talk to a trained cancer information specialist
Free, confidential assistance from NCI Cancer Information Service via phone, chat, or email.
Contact your oncology team
Locate after-hours contact numbers, portal messages, or urgent triage phone lines.
Find a patient navigator
Get one-on-one help with appointments, logistics, translation, and care coordination.
Find a genetic counselor
Discuss inherited mutation risk, family history, and genetic testing options.
Find an oncology social worker
Access emotional counseling, family support groups, and mental health resources.
Find a financial navigator
Locate copay assistance foundations, grant programs, and lodging/travel support.
Find a clinical-trial specialist
Search matching studies and speak with NCI trial information specialists.
Get urgent help
Immediate emergency guidance for fever (>100.4°F during chemo), severe pain, or shortness of breath.
Help Us Improve This Guide
Did this explanation answer your question and help you determine your next step?
Know someone who needs this?
Plenty of people are looking for something like this and do not know where to start. If this would help a friend or someone you love, send it on — we have written an opening line so you do not have to stare at an empty message. You can change every word of it.
Your message is written and sent in your own email or messaging app — we never see who you send it to, and nothing is added to any list.
Where to get help with this, by name
A hospital social worker or financial navigator is the best first call if you have one. If you do not, these organisations help at no cost to you.
- Patient Advocate Foundation — (800) 532-5274. Case managers take on insurance appeals, denials and medical debt with you. Free.
- TotalAssist (Patient Advocate Foundation's copay programme, merged with the PAN Foundation in 2026) — 866-512-3861. Help with medication copays, coinsurance and deductibles, insurance premiums, and office-visit and administration charges on the day of treatment, across nearly 150 conditions.
- CancerCare — 800-813-HOPE (4673). Oncology social workers, free counselling and support groups. Limited financial help with transport, home care, child care and lodging for people in active treatment who meet their income guidelines — funding is first-come, first-served, so call to ask what is open.
- Triage Cancer — 424-258-4628. Free legal and financial navigation: insurance, employment rights, disability.
- Blood Cancer United (formerly the Leukemia & Lymphoma Society) — (800) 955-4572. Information Specialists answer questions on treatment, insurance and financial problems.
- HealthCare.gov — 1-800-318-2596. For questions about the external review process — the independent review your insurer is required by law to accept.
Your state Department of Insurance regulates insurers and takes consumer complaints. On Medicare, your State Health Insurance Assistance Program (SHIP) gives free one-to-one counselling. If a specific drug is the problem, ask the manufacturer about its patient assistance programme.
Phone numbers checked 31 July 2026. Programmes and eligibility change — if a number has moved, please tell us.
Plain-language explanation of the published sources cited on this page. AI-assisted, source-checked, not clinician-reviewed.
Sources last checked: 2026-07-22 what this meansLast updated: 2026-08-13Next planned review: 2027-07-22
How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes. We do not employ clinicians and do not intend to — our work is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status — Source checked. This page was written with AI assistance and checked line by line against the sources listed on it. That confirms the sources support what the page says. It is not a medical review, and it does not confirm the page is complete or right for your situation.
General education — varies by person. Answers genuinely differ between people. This page explains what commonly varies and points you to your care team for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes. We do not employ clinicians and do not intend to — our work is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and checked line by line against the sources listed on it. That confirms the sources support what the page says. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
Read more about our editorial process, our use of AI, and our corrections policy.
Spotted a problem? Report an error — a factual mistake, broken or outdated source, confusing wording, or anything that seems unsafe. Please do not include names, medical record numbers, dates of birth, addresses, or other identifying medical information in your report.
After using this page, do you understand what to do next?
Anonymous — we only record the answer, never who gave it.
Related articles
Still have questions?
Educational answers, plain language
Free to print and share
