Medicare Advantage nursing home coverage explained

A discharge planner calls on a Tuesday afternoon and says the plan has approved four more days. Not the 100 days the Medicare handbook describes, not the three weeks the physical therapist recommended. Four days. This is the moment most families discover that their parent is not in Original Medicare at all, but in a Medicare Advantage plan run by a private insurer, and that the private insurer decides when rehabilitation ends. More than half of everyone on Medicare is now enrolled in one of these plans, usually chosen for the dental extras and the low premium rather than for how it behaves during a skilled nursing stay. The benefit itself is identical on paper. The path to it is not. This guide sets out what an Advantage plan must cover in a nursing home, where the friction actually happens, how to overturn a cut-off decision inside 72 hours, and why the next eight weeks are the right window to fix a plan choice before it costs a family thousands of dollars.

What Medicare Advantage has to cover in a nursing home

Every Medicare Advantage plan is legally required to cover at least what Original Medicare covers. That includes skilled nursing facility care of up to 100 days per benefit period after a qualifying hospital stay, with skilled nursing or therapy needed daily. The federal baseline is set out on the Medicare skilled nursing facility care page, and our own walkthrough of Medicare's 100 days of nursing home coverage covers how the benefit period clock resets. Two points get lost. First, this is rehabilitation coverage, not long-term custodial care: neither Original Medicare nor an Advantage plan pays for a permanent nursing home bed. Second, an Advantage plan is free to be more generous than the baseline but never less generous. Where plans differ from each other, and from Original Medicare, is in cost sharing, in network rules, and in the review process that decides whether each day is medically necessary.

The prior authorisation gate, and why stays end early

Original Medicare pays on the strength of a physician order and the facility's documentation. Most Advantage plans add a step: the facility must request approval before admission, then submit clinical updates every few days for continued stay review. A nurse reviewer at the plan, often working from an algorithmic criteria set, decides whether the resident still meets the standard for skilled care. When the answer is no, the facility issues a notice of non-coverage and the meter switches to private pay. Federal oversight has confirmed this is not a rare irritation. A Health and Human Services Office of Inspector General review of Advantage denials found that a meaningful share of prior authorisation requests that plans refused would have been paid under Original Medicare rules. CMS has since tightened the standards, requiring plans to apply Medicare coverage criteria rather than proprietary shortcuts, and the current rules for organisation determinations and appeals sit in the CMS managed care appeals and grievances guidance.

The three-day rule, waived and unwaived

Under Original Medicare a resident generally needs three consecutive inpatient hospital midnights before skilled nursing coverage begins, and observation nights do not count. Many Advantage plans waive that requirement entirely. For a family whose parent has been declining at home, that waiver is genuinely valuable, because it opens a rehabilitation stay without a hospital admission first. Ask two questions when reading a plan document. Does the plan waive the three-day qualifying stay, and does the waiver apply only inside the network or at any Medicare-certified facility? Plans participating in value-based arrangements often restrict the waiver to a short list of partner homes. The waiver is a benefit worth having, but only if it reaches the building the family actually wants.

Network rules and the home you had in mind

This is where geography and insurance collide. An HMO plan typically pays nothing at an out-of-network nursing home outside an emergency. A PPO pays, but at a higher coinsurance rate that can double the daily cost. If a family has spent weeks comparing star ratings and staffing hours, then discovers the preferred home is out of network, the choice becomes a bad one either way. Check the network before touring, not after. Compare the plan's facility directory against the homes that actually score well nearby, and use our nursing home search and the CMS quality data behind it to shortlist buildings that are both in network and worth being in. If the strongest homes in a county are all outside a plan's network, that on its own is a reason to change plans in the autumn.

What families actually pay under an Advantage plan

Cost sharing looks different from Original Medicare and is easy to underestimate. Under Original Medicare, days 1 to 20 of a skilled stay carry no coinsurance and days 21 to 100 carry a fixed daily amount set each year. Advantage plans restructure this into a per-day copayment schedule, and the shape varies by plan.

How the copayment schedules usually work

A common pattern looks like this. A modest daily copayment for the first stretch of days, often zero to around 50 dollars. A higher daily copayment for a middle band, frequently 150 to 200 dollars a day. Then zero for the remaining covered days. Some plans front-load the cost, some back-load it, and the totals across a 40-day stay can differ by thousands between two plans with the same monthly premium. Two protections do apply. Every Advantage plan carries an annual out-of-pocket maximum for in-network care, which Original Medicare does not have. And once the covered stay ends, the resident pays the facility's private rate, which is the same rate any private payer faces. Our guide to nursing home cost in the US sets out those daily private rates by state, and the post on hidden costs of nursing home care covers the ancillary charges that sit outside any Medicare product.

The fast appeal that families almost never use

When a plan decides skilled coverage should stop, the facility hands over a written notice, usually the Notice of Medicare Non-Coverage, at least two days before the last covered day. That notice carries a right to an immediate independent review by a Quality Improvement Organization, and the phone number is printed on it. The review is free, coverage generally continues while it is pending, and the decision arrives in roughly 72 hours. If the first review upholds the plan, there is a second level of reconsideration, then an administrative law judge hearing. The mechanics are described on the Medicare appeals page, and the regulations governing Advantage organisations, including timelines for expedited determinations, sit in 42 CFR part 422. Appeal rates remain low and overturn rates are high, which tells you most families accept the first answer. Call the number on the notice the same day it is handed over. Waiting until the last covered day forfeits the continued coverage protection.

Building an appeal that wins

Reviewers respond to clinical specifics, not to distress. Gather the therapy notes showing measured progress or a documented need for skilled maintenance. Ask the physician for a short statement naming the skilled service still required and the risk of stopping it, such as an unhealed surgical wound, an unstable gait with a recent fall, or a swallowing problem needing therapist supervision. Point out any function that has not yet returned to the level required to be safe at home. One legal argument is worth knowing: coverage does not require improvement. A resident who needs skilled care to maintain function or prevent deterioration still qualifies, a principle established in the Jimmo settlement and reflected in current CMS manual policy. Facilities sometimes forget this, and plans rarely raise it. Say the word maintenance out loud in the appeal.

Advantage extras that matter, and extras that do not

Plans compete on supplemental benefits, and some are genuinely useful during a nursing home episode: transportation to specialist appointments, an in-home support allowance after discharge, meals delivered for a few weeks post-discharge, over-the-counter allowances for incontinence and wound supplies. Others make good advertising and little difference to a frail resident, such as gym memberships and travel perks. Weigh the extras against the numbers that will actually bite: the skilled nursing copayment schedule, the network breadth in the county, and the plan's record on prior authorisation. Plan-level details, star ratings and copayment schedules can be compared on the official Medicare plan finder, and enrolment period rules are explained on the Medicare joining a plan page.

Why August is the month to audit the plan

Open enrolment runs from 15 October to 7 December each year, with changes taking effect on 1 January. Plan documents for the following year, the annual notice of change, land in mailboxes through late September. That leaves a narrow window when a family can read the current plan carefully, list its weaknesses, and know exactly what to look for when next year's options publish. There is a clinical argument for the same timing. Rehabilitation admissions climb through winter, driven by falls on ice, respiratory illness and post-surgical recovery from procedures scheduled before the year-end deductible resets. A plan chosen for its dental benefit in December is the plan that governs a February hip fracture. Families who audit in August choose on the numbers. Families who wait until an admission choose on whatever the plan already says. There is also a separate Medicare Advantage open enrolment period from 1 January to 31 March each year for people already in a plan, which allows one switch or a return to Original Medicare.

The switch back to Original Medicare, and the Medigap trap

Moving from an Advantage plan back to Original Medicare is straightforward on the Medicare side. The complication is supplemental coverage. A Medigap policy, which pays the coinsurance Original Medicare leaves behind, is only guaranteed to be sold without medical underwriting during specific windows, most reliably in the six months after first enrolling in Part B. Outside those windows most states allow insurers to refuse a policy or price it on health status, and a person who has spent time in a nursing home rarely underwrites well. Four states have year-round guaranteed issue rules, and several others have limited annual windows. Check the state rule before dropping an Advantage plan, because returning to Original Medicare without a Medigap policy exposes the household to unlimited 20 per cent coinsurance. A State Health Insurance Assistance Program counsellor advises on this free of charge, and every state runs one.

Nine questions to ask before the next admission

Keep these in one note on a phone, because they get asked under pressure.

The list worth saving

Does the plan require prior authorisation for skilled nursing admission, and how long does a decision take? Is the three-day hospital stay requirement waived, and at which facilities? Which nursing homes within 15 miles are in network? What is the copayment schedule per day, and what is the annual out-of-pocket maximum? Who at the plan handles continued stay reviews, and how often are they done? What is the direct phone number for an expedited appeal? Does the plan cover a bed hold if the resident is hospitalised mid-stay? Which supplemental benefits apply after discharge, and for how long? If the resident later needs long-term custodial care, what does the plan pay, and the honest answer to that last one is almost always nothing, which is where Medicaid planning starts.

What to do this week

Pull the current plan's evidence of coverage document and find the skilled nursing facility section, which is usually two pages of a table. Write down the copayment bands and the prior authorisation rule. Then open the plan's provider directory and cross-check it against the highest rated homes near the family address, because a network that excludes every four and five star home in the county is the finding that should drive a switch. Store the plan member number and the appeals phone number where a sibling can reach them at 6pm on a Friday. If an admission is already under way and a coverage cut-off notice has arrived, call the review number on the notice today rather than tomorrow. Compare local homes by star rating, staffing hours and inspection history on this site, take our questions to ask on a nursing home tour into the visit, and if a plan or a facility stonewalls, our walkthrough on filing an ombudsman complaint that gets action explains the escalation that actually moves people.

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