Understanding Medicare and Skilled Nursing Facility Placement

By Marie Stinebuck, MBA, MSN, ACM

Navigating skilled nursing facility (SNF) placement can be complex, particularly when patients have different types of Medicare coverage. Understanding the differences between Traditional Medicare and Medicare Advantage is essential for Case Managers because insurance coverage can directly affect eligibility, authorization, network options, patient responsibility, and the timing of discharge.

Under Traditional Medicare, a patient generally must meet specific requirements for Medicare-covered SNF care, including a qualifying three-day inpatient hospital stay, available SNF benefit days, and a need for medically necessary skilled services. Importantly, time spent in the Emergency Department or under observation does not count toward the three-midnight requirement. The patient's hospital status therefore plays an important role in determining eligibility for SNF coverage.

The three-midnight rule requires three consecutive midnights in inpatient status. Simply spending three nights in the hospital does not satisfy the requirement if some of that time was spent under observation or another outpatient status. This makes accurate patient status determination an important component of the SNF discharge-planning process. The Utilization Review Nurse plays a vital role in validating appropriate inpatient status and helping identify potential barriers to Medicare-covered SNF placement.

Traditional Medicare generally does not require prior authorization for a Medicare-covered SNF admission once the patient meets the applicable coverage requirements. In contrast, Medicare Advantage plans commonly require prior authorization and may have additional network and plan-specific requirements. Case Managers must verify the patient's specific plan requirements early, including whether authorization is required, which SNFs are in network, what clinical information must be submitted, how many days may be authorized, and what the patient's financial responsibility will be.

Understanding patient financial responsibility is also important. Under Traditional Medicare, the first 20 SNF days are generally covered at $0 patient coinsurance after applicable Part A requirements are met. Beginning with day 21, patient coinsurance applies when the patient continues to meet skilled-care requirements. Medicare Advantage plans may have different cost-sharing structures and may authorize shorter periods of care, requiring additional reviews throughout the SNF stay.

A key responsibility of Case Management is to begin planning early rather than waiting until the patient is medically ready for discharge. When SNF placement becomes a likely discharge option, the Case Manager should verify insurance benefits, evaluate eligibility requirements, initiate referrals, identify network limitations, and begin authorization when required. Early planning can prevent avoidable delays and ensure that the patient and family understand potential barriers.

It is also important to recognize that a SNF recommendation does not automatically mean Medicare will cover the stay. The patient must meet the applicable coverage requirements, including the need for daily skilled services that are reasonable and necessary and can appropriately be provided in a SNF.

Finally, Case Managers should understand that the three-midnight rule is not absolute in every circumstance. Certain waivers and specific Medicare models may provide exceptions. Teams should therefore verify whether a waiver or other applicable exception exists rather than assuming that every patient must meet the standard three-midnight requirement.