Skilled Nursing vs. Custodial Care: What Medicare Pays For

Defining Skilled Nursing Care and Custodial Care

Federal law and Medicare policy draw a clear line between two categories of post-acute care. Skilled nursing care refers to services that require the technical knowledge and clinical judgment of licensed professionals, typically a registered nurse, licensed practical nurse, or licensed therapist. These services cannot be safely performed by non-professional personnel or by the patient independently. Examples include intravenous antibiotic administration, complex wound debridement, nasogastric tube feeding management, and physical or occupational therapy aimed at measurable functional improvement.

Custodial care, by contrast, refers to assistance with activities of daily living that do not require professional licensure to perform safely. Bathing, dressing, grooming, toileting, ambulation assistance, and medication reminders fall into this category. Under 42 C.F.R. § 409.36, Medicare explicitly excludes custodial care from coverage because the services are primarily maintenance-oriented rather than medically diagnostic or therapeutic in the licensed clinical sense.

The distinction is not always defined by the setting. A person residing in a skilled nursing facility may receive custodial care once their skilled-care needs have been resolved, and the transition between the two can occur within the same physical room on the same day.

Why Medicare Covers One Category and Not the Other

Medicare was structured in 1965 as an acute-care insurance program, not a long-term care entitlement. Congress designed Part A to cover hospitalizations and short-term post-acute recovery, and Part B to cover medically necessary outpatient and physician services. Custodial care, which may extend for months or years, was deliberately excluded from the program's scope.

The legal standard embedded in the Medicare Benefit Policy Manual requires that covered services be medically necessary and reasonable, meaning they must be ordered by a physician and require professional clinical skills to execute. Because custodial tasks can be performed by unlicensed aides or family members with basic instruction, they do not meet this threshold. The Centers for Medicare and Medicaid Services (CMS) reinforces this distinction in the Medicare Benefit Policy Manual, Chapter 8, which governs skilled nursing facility (SNF) coverage criteria.

The practical consequence is significant. An estimated 70 percent of adults over age 65 will require some form of long-term custodial care during their lifetimes, yet Medicare will cover none of that ongoing custodial need once short-term skilled criteria are no longer met.

The Jimmo v. Sebelius Settlement and Maintenance Therapy

For decades, Medicare contractors applied an informal rule requiring that a patient demonstrate measurable functional improvement to qualify for continued skilled therapy coverage. If a patient plateaued or showed no objective progress, coverage was frequently terminated, even when skilled care was necessary to prevent decline. This practice, sometimes called the "improvement standard," was not grounded in the statutory text of the Medicare Act.

In 2013, a federal court approved a settlement in Jimmo v. Sebelius, a class-action lawsuit filed against the Secretary of Health and Human Services. The settlement required CMS to clarify in official policy that Medicare covers skilled maintenance therapy, meaning skilled nursing or therapy services provided to maintain a patient's current condition or to prevent or slow deterioration, even when no functional improvement is expected. CMS issued manual updates in January 2014 reflecting this clarification.

The Jimmo settlement applied to both SNF and home health contexts. Under the corrected standard, a patient with a progressive neurological condition such as Parkinson's disease or multiple sclerosis may qualify for ongoing skilled therapy to preserve existing function, not solely to achieve improvement. Despite the policy change, subsequent audits and advocacy reports indicated that the improvement standard continued to be applied informally by some contractors and facilities, prompting CMS to issue additional educational guidance in 2017 and 2018.

Medicare Part A SNF Coverage: Qualifying Criteria and the 3-Day Rule

Medicare Part A covers skilled nursing facility care under a specific set of entry conditions. A beneficiary must meet all of the following requirements:

• The beneficiary must have a qualifying inpatient hospital stay of at least three consecutive days, not counting the day of discharge, as a formally admitted inpatient. Observation status days do not count toward this requirement.
• The SNF admission must occur within 30 days of discharge from the qualifying hospital stay.
• A physician must certify that the patient requires daily skilled nursing or skilled rehabilitation services.
• The services must be delivered in a Medicare-certified SNF.

The three-day inpatient requirement has been a source of confusion because hospitals increasingly place patients under observation status, which is an outpatient classification despite the patient physically occupying a hospital bed. A patient discharged after three nights under observation status does not have a qualifying hospital stay and therefore cannot access Medicare Part A SNF benefits, regardless of medical need.

When the qualifying criteria are met, Medicare Part A covers the first 20 days of SNF care at 100 percent of approved costs. From day 21 through day 100, beneficiaries are responsible for a daily coinsurance amount, set at $209.50 per day in 2024. After day 100, Medicare Part A pays nothing, and the beneficiary is responsible for the full cost of care.

The Transition from Skilled to Custodial Care

Medicare coverage within a SNF ends when the skilled-care need is resolved, when the beneficiary refuses skilled services, or when the beneficiary reaches the 100-day benefit limit for a given benefit period. At that point, if the individual still requires assistance with daily functions but no longer requires licensed clinical intervention, care becomes custodial by definition.

The financial exposure at this transition is substantial. The national median cost of a private room in a skilled nursing facility was approximately $108,405 per year as of 2023, according to Genworth Financial's annual cost of care survey. A semi-private room averaged roughly $94,900 per year. These costs are paid entirely out of pocket once Medicare coverage ceases and no other coverage mechanism is in place.

Beneficiaries who have purchased private long-term care insurance may have benefits that activate at this transition point. However, fewer than 4 percent of Americans over age 65 held a long-term care insurance policy as of recent industry estimates, leaving the majority without a private funding mechanism.

Medicaid as the Primary Payer for Custodial Long-Term Care

Medicaid, the joint federal-state program for individuals with limited income and assets, serves as the principal public payer for long-term custodial care in the United States. Unlike Medicare, Medicaid does not restrict coverage to skilled services and will pay for ongoing assistance with activities of daily living in nursing facilities, assisted living facilities in states that offer this option, and home and community-based settings through waiver programs.

To qualify for Medicaid long-term care benefits, applicants must meet state-specific income and asset limits. Most states require that countable assets not exceed $2,000 for a single individual, though definitions of countable versus exempt assets vary. Exempt assets typically include a primary residence under a certain equity threshold, one vehicle, and personal property. A well spouse is subject to community spouse resource allowance protections under federal law, allowing retention of assets up to approximately $154,140 in 2024.

Medicaid spend-down requirements mean that many middle-income older adults must deplete most of their savings before qualifying for coverage. States may pursue estate recovery to recoup Medicaid expenditures after a beneficiary's death, primarily from probate assets. As of 2023, Medicaid financed approximately 62 percent of all nursing home resident days nationally, reflecting the program's role as the default payer for long-term custodial care when Medicare and private resources are exhausted.