Medicare rules, explained

The real rules an Original Medicare denial and appeal actually turn on — plain language, every claim cited to its real source.

• The Medicare claims ladder: MAC, QIC, OMHA, Council, court

  Five real levels of review for a denied Medicare claim, each with its own filer deadline, its own decider clock, and its own real chance of a different outcome.

• The ABN and who actually owes the bill after a Medicare denial

  When Medicare denies a service as not reasonable and necessary, the family generally owes nothing unless a valid Advance Beneficiary Notice was given first — the provider bears the cost instead.

• The two-midnight rule: why a hospital calls a stay "observation" instead of "inpatient"

  Whether a physician reasonably expected the stay to cross two midnights at the time of the original order is the actual legal question an observation-status appeal turns on — not how the stay ultimately went.

• The Jimmo settlement: Medicare doesn't require improvement for skilled care

  A 2013 court settlement confirmed that skilled nursing, home health, and outpatient therapy can be covered to maintain a patient's condition or slow decline — not only when the patient is expected to get better.

• CPAP and home oxygen: the specific test numbers a claim denial turns on

  The exact sleep-test and blood-gas thresholds Medicare requires — and why a claim denial usually turns on a missing number, not a judgment call.

• Power wheelchairs and scooters: the coverage test behind a claim denial

  The specific things a power mobility device claim has to document — and why a home visit and a lesser-device trial both usually matter.

• Medicare Secondary Payer demands: what a conditional payment is, and what's actually worth disputing

  A conditional payment is money Medicare paid on your behalf that it expects back once a settlement, judgment, or award comes in — but the demand amount itself is frequently wrong, and a real reduction for your own attorney fees and costs is often missed.

• Waiver, compromise, and appeal — three different ways to answer an MSP demand

  Disputing that you owe the money, asking Medicare to forgive it anyway because of hardship, and asking Medicare to accept less than the full amount are three legally distinct requests, with different standards and different rights attached.