What Does Medicare Cover? How to Check Services, Items and Care
Medicare covers many services, items and types of care—but not everything. The answer may depend on the exact service, which Medicare benefit applies, whether coverage conditions are met and how you receive Medicare.
Use this guide to understand which Medicare coverage rules may apply, what details can affect the answer, and where to confirm your coverage before you receive care. RobinsWisdom helps you understand the process, but Medicare or your plan makes the official coverage decision.
Start with how you receive Medicare
The same service can involve different steps depending on your coverage arrangement. Begin here before relying on a general answer.
Original Medicare
Part A generally handles inpatient hospital, qualifying skilled nursing facility, hospice and some home health benefits. Part B generally handles physician, outpatient, preventive and medically necessary services and equipment.
Medicare Advantage
The plan provides Medicare-covered Part A and Part B services. Networks, referrals, prior authorization and plan procedures may apply. Supplemental benefits vary by plan and year.
Verify with the current Evidence of Coverage, provider directory and the plan itself.
Drug coverage
Drugs may be covered by Part A in a covered inpatient stay, by Part B in limited outpatient circumstances, or by Part D for most outpatient and retail prescriptions.
Review Medicare Part D, then check the actual formulary and pharmacy rules.
Four ways Medicare may answer a coverage question
Medicare coverage isn’t always a simple yes or no. Most questions fall into one of these four situations.
Generally covered
Medicare may cover the service when its coverage requirements are met—for example, medically necessary doctor or hospital care.
Generally not covered
Original Medicare generally doesn’t cover things like routine dental care, hearing aids or long-term custodial care, although limited exceptions may apply.
Covered in certain situations
Some services are covered only when certain requirements are met, such as why you need the care, where you receive it, who provides it or how often you need it.
Depends on your plan
With Medicare Advantage or Part D, the answer may depend on your specific plan, including its network, drug list and authorization rules.
Which Medicare benefit may control the answer?
Part A
May apply to inpatient hospital care, qualifying skilled nursing facility care, hospice and some home health services.
Part B
May apply to doctors, outpatient care, preventive services, diagnostic testing, therapy, durable medical equipment and limited outpatient drugs.
Part D or an MA drug plan
Usually controls outpatient retail prescriptions. The plan’s formulary, pharmacy network and utilization rules matter.
What can change the answer?
A broad “yes” or “no” can miss the condition that actually controls coverage. Check the factors that apply to your situation:
Clinical reason
- Diagnosis or indication
- Medical necessity
- Improvement, maintenance or prevention goals where relevant
Setting and paperwork
- Inpatient, outpatient, home, facility or pharmacy
- Order, prescription, referral or certification
- Plan of care or supporting documentation
Who provides it
- Eligible or enrolled provider/supplier
- Medicare participation or assignment
- Medicare Advantage network status
Benefit limits
- Frequency, timing or duration
- National or local coverage rules
- Utilization limits
Plan rules
- Referral or prior authorization
- Network and service area
- Plan procedures and supplemental benefits
Drug rules
- Formulary and indication
- Tier and pharmacy
- Prior authorization, step therapy or quantity limits
High-consequence coverage questions
Skilled nursing facility care
Original Medicare Part A may cover short-term skilled nursing facility care when its requirements are met. That can include a qualifying inpatient stay where required, timely SNF admission, a continuing daily skilled need and care in a Medicare-certified SNF. Observation time is not the same as an inpatient admission. Certain waivers or Medicare Advantage plan rules may change the hospital-stay requirement. A benefit-period maximum of up to 100 days is not a guarantee of 100 covered days, and skilled care may qualify to maintain a condition or prevent deterioration—not only to improve it.
Check Medicare’s skilled nursing facility rules.
Home health
Medicare home health coverage may require that you are homebound, need qualifying skilled services, are under an authorized plan of care and use a Medicare-certified agency. Covered care is generally part-time or intermittent. Personal care alone, without a qualifying skilled need, is not covered.
Check Medicare’s home health requirements.
Hospice
The Medicare hospice benefit generally requires Part A, certification of a terminal-illness prognosis, a hospice election and care under the hospice plan of care. Hospice focuses on the terminal illness and related conditions; Medicare may continue to cover qualifying unrelated care. Hospice can be provided where a person lives, but room and board is generally not covered except in limited arranged inpatient or respite circumstances.
Read the hospice-at-home guide or verify the Medicare hospice benefit.
Long-term custodial care
Medicare generally does not cover long-term custodial care when ongoing help with activities of daily living is the only care needed. Qualifying skilled nursing, home health or hospice benefits may include limited personal-care assistance when all requirements for that covered benefit are met.
Review Medicare’s national long-term-care guidance.
Dental, hearing and vision
Dental
Original Medicare generally excludes routine dental care, but limited dental services may be covered when they are inextricably linked to certain covered medical treatment. Medicare Advantage dental benefits vary.
Hearing
Original Medicare does not cover hearing aids or exams for fitting them. Part B may cover qualifying diagnostic hearing and balance exams ordered to determine whether medical treatment is needed.
Vision
Original Medicare generally does not cover routine refraction for eyeglasses, but it may cover certain condition-specific eye services and limited corrective lenses after cataract surgery.
Physicals and preventive visits
Original Medicare generally does not cover a traditional routine annual physical. The one-time Welcome to Medicare preventive visit, yearly Annual Wellness Visit and specific preventive services are different benefits with their own rules.
See the physicals-versus-wellness guide.
Travel
Original Medicare generally provides very limited coverage outside the United States. Medicare Advantage service areas, network rules and emergency/urgent-care provisions vary by plan. Confirm domestic and international travel rules before leaving.
Review Medicare’s travel coverage rules.
Prescription drugs
Use the three-path test: drugs may be included under Part A during covered inpatient or SNF care, covered by Part B in limited outpatient circumstances, or handled by Part D/Medicare Advantage drug coverage for most outpatient retail prescriptions. For the last category, verify the exact drug, formulary, tier, pharmacy and utilization rules.
Coverage is not the same as cost
Deductibles, copayments, coinsurance, provider participation, network status and the amount Medicare or a plan allows can still affect what you owe.
Start with Medicare costs and financial help when your question is broader than whether a service is covered.
Prepare before you ask about coverage
Gather the details that apply. The more specific the question, the more useful the answer can be.
- The exact service, item, test, treatment, equipment or drug
- The procedure or service code, if the provider can give it to you
- The diagnosis or reason the service is being ordered
- The doctor’s order, prescription, referral or certification
- The care setting: inpatient, outpatient, home, facility or pharmacy
- The provider or supplier and whether they participate or are in network
- Your Medicare arrangement and exact plan name
- Any required authorization and the expected date of service
Verify before relying on a coverage answer
- Search Medicare.gov’s coverage directory and the applicable benefit page.
- For technical national or local criteria, use the CMS Medicare Coverage Database.
- For Medicare Advantage or Part D, check the current plan documents and confirm with the actual plan.
- Ask the provider or supplier about orders, documentation, Medicare enrollment or participation, billing and any advance notice of noncoverage.
- For a drug, check the plan formulary and confirm with the pharmacy and plan.
- Use a State authority only when Medicaid, assistance or another State-controlled rule materially changes the question.
RobinsWisdom can explain the pathway and help beneficiaries prepare questions. It does not officially determine coverage, medical necessity, plan authorization or claim payment.
If coverage or payment is denied
Start with the written notice—such as your Medicare Summary Notice, plan EOB or formal denial or termination notice. It tells you what was decided, why, the deadline and where to file. Appeal steps differ for Original Medicare, Medicare Advantage and Medicare drug coverage.
Use Medicare’s official appeals guidance.
Do not delay a deadline while seeking general education. A Medicare Review does not replace formal appeal rights or decide whether Medicare or a plan must cover a service.
Frequently asked Medicare coverage questions
What does Medicare generally cover?
Original Medicare generally covers qualifying hospital, physician, outpatient, preventive, diagnostic, equipment, skilled nursing, home health and hospice services under Parts A and B. The exact answer depends on the benefit and whether its conditions are met.
What does Medicare generally not cover?
Original Medicare generally excludes routine dental care, hearing aids, most routine vision care and long-term custodial care, among other categories. Limited exceptions may apply, and Medicare Advantage supplemental benefits vary by plan.
How do I check whether Medicare covers a service?
Identify the exact service, code, diagnosis, setting, provider and coverage arrangement. Search Medicare.gov, review the applicable benefit rules and confirm plan-specific requirements with the actual plan and provider before care.
Does Medicare Advantage cover everything Original Medicare covers?
Medicare Advantage plans must provide Medicare-covered Part A and Part B benefits, but the plan becomes the main way you receive those services. Networks, referrals, prior authorization, cost sharing and plan procedures may apply. Supplemental benefits vary.
Does Medicare cover every prescription drug?
No. Part D and Medicare Advantage drug plans use formularies and may apply tiers, pharmacy networks, prior authorization, step therapy or quantity limits. Parts A or B cover some drugs in specific settings or circumstances.
Do you need help organizing your Medicare plan questions?
If you have completed the appropriate Medicare, plan and provider verification and want help understanding your coverage arrangement, the questions to verify or Medicare coverage options available where Robin is licensed and authorized, you may request a Medicare Review.
A Medicare Review does not determine medical necessity, authorize care, decide a claim, override Medicare or a plan, or replace formal appeal rights.
Request a Medicare Review
