FAQ

Medicare usually covers services and supplies that are medically necessary. Coverage also depends on where you get care (hospital inpatient, outpatient, doctor’s office, rehab facility, home) and which type of Medicare you have. Medicare Advantage plans must cover what Original Medicare covers, but may have extra rules like networks and prior authorization. Always confirm benefits before big tests or procedures.

In simple terms, Part A generally helps when you’re admitted as an inpatient to a hospital (and certain facility-based care after a hospital stay). Part B generally covers doctor visits, many tests, and outpatient services. The setting and your patient status matter because they affect both coverage and cost-sharing.

Medicare usually covers medically necessary visits with doctors and specialists under Part B (for Original Medicare). If you have Medicare Advantage, the plan still covers these services, but you may need to follow network and referral rules.

Inpatient means you were formally admitted to the hospital, which is typically billed under Part A. Observation is usually considered outpatient, even if you stay overnight, and is typically billed under Part B. The difference can affect costs and what follow-up care may be covered.

Medicare may cover ambulance transport when it’s medically necessary, especially in emergencies. Coverage is often tied to getting you to the nearest appropriate facility. For Medicare Advantage, coverage still applies, but plan rules and cost-sharing can vary.

Medicare often covers medically necessary imaging tests ordered by a clinician. These are commonly billed under Part B (including hospital outpatient imaging). Medicare Advantage plans may require prior authorization for certain imaging.

“Medically necessary” generally means a doctor or qualified provider believes the service is needed to diagnose, treat, or manage a health condition. Medicare coverage is often documentation-driven, so clear notes and the right diagnosis codes matter.

The same service can be billed differently depending on the setting. For example, a test done in a hospital outpatient department may include facility charges in addition to the professional fee. That can change your out-of-pocket costs.

Medicare often covers medically necessary physical therapy (PT), occupational therapy (OT), and speech-language therapy (SLP). Coverage depends on the setting: inpatient rehab, SNF, home health, or outpatient therapy. Medicare Advantage may require prior authorization or in-network providers.

Under Original Medicare, SNF coverage commonly requires a qualifying inpatient hospital stay (often described as the “3-day rule”). Observation status usually doesn’t count the same way. Medicare Advantage plans may have different rules, but often require prior authorization and in-network facilities.

Medicare home health is typically for intermittent skilled care, like skilled nursing and therapy, when criteria are met (often including being homebound and having a plan of care). It’s not the same as long-term personal care or full-time help with daily activities.

Medicare may cover DME when it’s medically necessary and prescribed by a qualified provider. Coverage often depends on documentation and using the right supplier. Medicare Advantage plans may require in-network suppliers and prior authorization.

Medicare may cover home oxygen when medical necessity is documented and qualifying requirements are met. Coverage is often paperwork- and testing-driven, and portable oxygen can have additional rules. Medicare Advantage plans may require prior authorization and in-network suppliers.

A formulary is the plan’s list of covered drugs. Formularies often include tiers (lower tiers usually cost less) and rules like prior authorization, quantity limits, and step therapy. It’s smart to verify your medications are covered and what your cost will be.

Prior authorization means your plan may need to approve a service before it’s covered. This can come up with imaging, procedures, rehab services, home health, and DME—especially in Medicare Advantage plans. Delays often happen when paperwork is missing, so it helps to confirm who submits the request and when.

Most medications you pick up at a pharmacy and take yourself are covered under Part D (or a Medicare Advantage plan with drug coverage). Part B covers a more limited set of outpatient drugs—often those administered in a clinic or used with certain medical equipment.

Sometimes. In outpatient settings (including observation), medicines you would normally take yourself may be billed differently. If you’re in observation or having an outpatient procedure, ask how routine medications are handled and billed.

Medicare may cover cardiac rehabilitation for certain qualifying heart conditions or after specific procedures, when it’s medically necessary. Medicare Advantage plans may require in-network programs and prior authorization. Ask your provider if you qualify and where the program is offered.

Medicare may cover pulmonary rehabilitation for eligible people with COPD when it’s medically necessary. Medicare Advantage plans may require prior authorization and in-network providers. Ask your provider whether you qualify and what the program includes.

Treat stroke symptoms as an emergency. Call 911 right away. Quick treatment can protect brain function and improve outcomes. If you’re unsure, it’s better to be evaluated immediately than to wait.

A routine screening and a diagnostic evaluation can be billed differently. If a provider examines a spot because of concern and performs a biopsy or removal, that’s typically treated as diagnostic care and may have cost-sharing. Ask whether a visit or procedure is being billed as screening or diagnostic.

Medicare covers certain preventive screenings, but details depend on eligibility rules and how the service is billed. If testing is done because of symptoms or follow-up concerns, it may be billed as diagnostic instead of preventive. Ask your provider how the test will be coded and billed.

Medicare may cover cognitive evaluation and related visits when medically necessary. Coverage can vary by setting and plan type, and follow-up care may be billed differently depending on the services provided. If you have Medicare Advantage, confirm any network requirements or referral rules.

Medicare is generally designed to cover medically necessary health care services, not ongoing custodial care like long-term supervision, help with daily activities, or memory care facility costs. Some medical services related to Alzheimer’s may be covered, but long-term custodial support typically requires other planning.