Medicare’s requirement of a three-day inpatient hospital stay before it will cover a skilled nursing facility (SNF) stay has three recognized exceptions: a waiver built into your Medicare Advantage plan, a waiver tied to a CMS innovation model your provider participates in (currently ACO programs and the new TEAM model), and a waiver issued during a declared public health emergency. Whether any of them applies to you depends on your plan, your provider, or whether an emergency waiver is active. These are the only routes around the rule under Original Medicare and Medicare Advantage.
The baseline rule, set by federal law, is that Medicare Part A covers SNF care only after a qualifying inpatient hospital stay of at least three consecutive days, counted midnight to midnight, and the SNF admission must occur within 30 days of hospital discharge.1Office of the Law Revision Counsel. 42 U.S. Code 1395d – Scope of Benefits2Medicare.gov. Skilled Nursing Facility Care Time in the emergency room or under outpatient observation does not count toward the three days, even if you’re in a hospital bed the entire time.3Centers for Medicare & Medicaid Services. Skilled Nursing Facility 3-Day Rule Billing That last point is where most people who think they need an exception actually got tripped up by the rule’s fine print, and it deserves its own section below.
Exception 1: A Medicare Advantage Plan Waiver
If you have a Medicare Advantage (Part C) plan instead of Original Medicare, your plan may waive the three-day hospital stay requirement entirely. Medicare confirms that MA plans have this flexibility.2Medicare.gov. Skilled Nursing Facility Care In practice, a plan that offers the waiver can approve a direct SNF admission after an outpatient surgery or a short ER visit without three inpatient midnights.
Not every plan does this. Whether yours does depends on how the plan is designed, so check your Evidence of Coverage document or call the member services number on your plan card. Ask two questions: Does the plan waive the three-day prior hospitalization requirement for SNF admission? And if so, does the waiver apply at any SNF or only at in-network facilities? The second answer decides where you can go.
Exception 2: A CMS Innovation Model Waiver
The Centers for Medicare & Medicaid Services runs payment models that can waive the three-day rule for beneficiaries whose providers participate. Two are relevant in 2026: certain Accountable Care Organizations, and the Transforming Episode Accountability Model (TEAM), which launched January 1, 2026.
ACO Waivers
Some ACOs in the Medicare Shared Savings Program and the ACO REACH Model can send their assigned beneficiaries directly to a SNF, skipping the hospital stay. Several conditions have to line up. You must be assigned to a participating ACO. The SNF has to be on that ACO’s approved affiliate list and generally needs a three-star or better overall rating under CMS’s Five-Star Quality Rating System for at least seven of the previous twelve months.4CMS. ACO REACH Model PY 2026 Participant and Preferred Provider Management Guide
On the clinical side, you must have a confirmed diagnosis, be medically stable, not already live in a long-term care setting, and have been evaluated by an ACO provider within three days before the SNF admission.5CMS. Skilled Nursing Facility 3-Day Rule Waiver Guidance Meet all of those, and Medicare pays the SNF directly.
The TEAM Model
TEAM runs from January 1, 2026, through December 31, 2030, and focuses on episode-based payments for certain surgical procedures. It includes a SNF three-day rule waiver for eligible patients discharged from participating hospitals.6Centers for Medicare & Medicaid Services. MM14098 – Implementing the Transforming Episode Accountability Model Skilled Nursing Facility 3-Day Rule Waiver
Participants are acute care hospitals selected by CMS based on geographic area, plus hospitals that voluntarily opted in from earlier bundled-payment programs. For the waiver to apply, you must be in a TEAM episode of care, have Medicare as your primary payer with both Part A and Part B, and be admitted to a qualified SNF (three stars or better) within 30 days of discharge. CMS keeps an updated list of participating hospitals and qualified SNFs on the TEAM webpage.6Centers for Medicare & Medicaid Services. MM14098 – Implementing the Transforming Episode Accountability Model Skilled Nursing Facility 3-Day Rule Waiver
For both ACO and TEAM waivers, the practical move is the same: ask your doctor or hospital discharge planner before discharge whether your provider participates in a CMS model that includes a SNF three-day rule waiver and whether you qualify.
Exception 3: A Public Health Emergency Waiver
During a declared public health emergency, the Secretary of Health and Human Services can waive the three-day requirement under Section 1812(f) of the Social Security Act, which authorizes SNF coverage without a qualifying hospital stay as long as it doesn’t increase overall program costs or change the acute-care nature of the benefit.1Office of the Law Revision Counsel. 42 U.S. Code 1395d – Scope of Benefits
The largest recent use of this authority came during COVID-19. CMS issued a blanket waiver of the three-day prior hospitalization requirement, letting beneficiaries affected by the pandemic enter SNFs without a qualifying hospital stay.7Centers for Medicare & Medicaid Services (CMS). COVID-19 Emergency Declaration Blanket Waivers for Health Care Providers That waiver expired when the COVID-19 public health emergency ended on May 11, 2023.8CMS. Guidance for the Expiration of the COVID-19 Public Health Emergency
No blanket PHE waiver of the three-day rule is in effect as of 2026. The authority remains and could be used again in a future emergency, so watch for CMS announcements if a new PHE is declared.
The Observation Status Problem
Before assuming you need an exception, check what you actually were during your hospital stay. You can spend four days in a hospital bed, receive IV medications, and sleep in a hospital gown while still being classified as an outpatient receiving “observation services” rather than an admitted inpatient. Observation time does not count toward the three days, no matter how long it lasts.3Centers for Medicare & Medicaid Services. Skilled Nursing Facility 3-Day Rule Billing
The classification is a medical and billing decision made by the hospital. From your side of the bed the two look identical, but only inpatient time qualifies you for SNF coverage. Federal law requires hospitals to give you a written Medicare Outpatient Observation Notice (MOON) if you’ve been under observation for more than 24 hours.9CMS. FFS and MA MOON If you get that notice, the clock isn’t running.
You can appeal if the hospital changes your status from inpatient to outpatient observation. As of February 2025, you can request a fast appeal while still in the hospital, and the hospital should give you a Medicare Change of Status Notice with instructions. If you’ve already been discharged, you can still appeal by contacting your local Beneficiary and Family Centered Care Quality Improvement Organization (BFCC-QIO). A successful appeal requires the SNF to refund any payments you or your family made for covered services, generally within 60 days.10Medicare.gov. Appeal When a Hospital Changes Your Status From Inpatient to Outpatient Getting Observation Services Winning an appeal is effectively a fourth route around the three-day problem when the underlying stay really was inpatient care.
The 30-Day Readmission Window
One more built-in exception is worth knowing. If you had a qualifying hospital stay, were admitted to a SNF, then left and need to return within 30 days, you do not need another three-day hospital stay. The same holds if you stop receiving skilled care in the SNF and then resume skilled care within 30 days.2Medicare.gov. Skilled Nursing Facility Care Past 30 days, Medicare won’t cover a new SNF stay unless you qualify through another hospital admission or one of the exceptions above.
Where to Get Help Sorting This Out
If you’re unsure whether an exception applies, call Medicare at 1-800-MEDICARE (1-800-633-4227), available 24 hours a day, seven days a week. TTY users can call 1-877-486-2048.11Medicare. Talk to Someone – Contact Medicare
Your State Health Insurance Assistance Program (SHIP) offers free one-on-one counseling from trained volunteers who can walk you through coverage rules, help with appeals if a SNF claim is denied, and confirm whether your plan or provider participates in a waiver program. Find your state’s SHIP at shiphelp.org or by calling 1-800-MEDICARE.12Administration for Community Living. State Health Insurance Assistance Program (SHIP)