Medicare's 100 days: a bridge, not a destination

The benefit, precisely

Three gates guard the door: a qualifying inpatient stay (3+ midnights as an admitted inpatient — "observation status" nights don't count, and asking "am I admitted or under observation?" is the single highest-value question a family can put to a hospitalist); admission to a Medicare-certified SNF generally within 30 days; and a daily skilled need — therapy or skilled nursing aimed at the condition. A "benefit period" resets only after 60 consecutive days out of hospital/SNF care, so the 100 days can renew — across a gap, not in a row.

Where families get blindsided

• "Plateaued" doesn't legally end coverage — but it ends it in practice. Under the Jimmo settlement, Medicare covers skilled care to maintain function, not just improve it; facilities still issue cutoff notices on improvement logic. Appeal rights exist and expedited appeals frequently win days back — the notice itself explains the fast-track number.
• The 100 days were never the plan. Median covered SNF stays run a few weeks; the benefit is a bridge to home or to a long-term arrangement. Families who start the VA placement or A&A paperwork on day 5 are calm on day 95.
• Medicare Advantage runs the same benefit through plan rules. The day structure holds, but prior authorization and concurrent review can end MA-covered stays earlier than Original Medicare's would — a real line item in the OM-vs-MA decision for anyone eyeing future care needs. (Some MA plans waive the 3-day stay; the trade is the review regime.)
• Home health and hospice are the other two skilled doors. Intermittent skilled care at home for the homebound, and the hospice benefit at end of life, are both Medicare-covered without the SNF gates — and both coordinate fine with VA care, which never coordinates with anything.