Home Health Services Coverage Under Medicare and Medicaid

Medicare and Medicaid together fund home health services for tens of millions of Americans — but the rules governing what qualifies, who qualifies, and for how long are far more specific than most people expect. Understanding where these programs overlap, where they diverge, and what can fall through the cracks is genuinely useful for patients, caregivers, and anyone navigating a discharge plan after a hospitalization.

Definition and scope

Home health services, as defined by the Centers for Medicare & Medicaid Services (CMS), are skilled care services delivered in a patient's residence by a Medicare- or Medicaid-certified agency. The residence can be a private home, a relative's home, or an assisted living facility — but not a hospital, skilled nursing facility, or nursing home.

The scope includes four core service categories: skilled nursing care, physical therapy, speech-language pathology, and occupational therapy. Home health aide services (assistance with bathing, dressing, and personal care) are also covered, but only when a patient is already receiving one of the skilled care services. Social work visits are covered under both programs when medically necessary and ordered by a physician.

What home health services are notably not is 24-hour custodial care. The programs cover intermittent skilled care — think a nurse visiting three times a week to manage wound care or a physical therapist conducting gait training after a hip replacement. Long-term personal care assistance is a different category altogether, often covered instead by Medicaid's HCBS (Home and Community-Based Services) waiver programs, which vary considerably by state.

How it works

Medicare's home health benefit operates under Part A or Part B, depending on how the patient entered the service. The eligibility requirements are specific:

When those four conditions are met, Medicare covers home health at 100% with no copay — one of the few Medicare benefits with no cost-sharing at the point of service. The benefit is not time-limited in the traditional sense; coverage continues as long as the patient remains homebound and requires skilled care. CMS's Medicare Benefit Policy Manual, Chapter 7 details these criteria at length.

Medicaid's home health benefit has a different architecture. It is a mandatory benefit under federal Medicaid law (42 CFR §440.70), meaning every state must cover it — but states have latitude in setting payment rates, agency requirements, and service limits. Medicaid home health does not require a prior hospitalization (unlike Medicare's skilled nursing facility benefit), and the homebound requirement is generally less strict. For patients navigating health insurance options, the Medicaid pathway is often more accessible when Medicare's homebound threshold isn't met.

Common scenarios

Post-acute recovery. A 68-year-old Medicare beneficiary is discharged after knee replacement surgery. The hospital's discharge planning services team coordinates a home health referral. A physical therapist visits three times weekly; a nurse manages the surgical site. This is the scenario Medicare home health was designed for.

Chronic condition management. A patient with congestive heart failure requires regular skilled nursing visits for medication titration, weight monitoring, and patient education. Medicare covers this under chronic disease management services frameworks — not because the patient had a recent hospitalization, but because the skilled need is ongoing and medically documented.

Dual-eligible patients. Approximately 12.5 million Americans are enrolled in both Medicare and Medicaid (KFF Dual Eligible Beneficiaries Data, 2023). For these patients, Medicare pays first for covered home health services, and Medicaid may cover cost-sharing or services Medicare doesn't include, such as extended home health aide hours.

Pediatric home health. Children with complex medical needs — ventilator dependence, severe neurological conditions — often rely on Medicaid home health, since Medicare generally covers adults 65 and older or those with qualifying disabilities. Pediatric patient services through Medicaid can include nursing hours well beyond what adult home health typically provides.

Decision boundaries

The sharpest line in home health coverage runs between skilled and custodial care. Skilled care requires the expertise of a licensed clinician. Custodial care — help with daily activities, supervision, companionship — does not. Medicare does not cover custodial care at home, period.

A second critical boundary is the homebound determination. It is stricter under Medicare than most people assume: a patient who leaves home regularly for non-medical activities will lose eligibility, even if the medical need for skilled services remains. Medicaid's definition is more flexible.

The third boundary involves prior authorization requirements. Medicare currently does not require prior authorization for most home health services (though a CMS pre-claim review model has been piloted in select states). Medicaid agencies, however, routinely require prior authorization, and denials based on medical necessity determinations are a documented source of access barriers — a point raised in the CMS Medicaid Managed Care Final Rule (89 FR 41002, 2024).

For patients whose conditions fall near any of these lines — not quite homebound, not quite skilled, somewhere between acute recovery and long-term care — the care coordination services and patient advocacy services available through most hospital systems can clarify eligibility before a denial forces the question. The appeals process exists precisely because these determinations are not always obvious, even to the agencies making them.