Medicare Glossary: Simple Definitions & Terms

A yearly visit with your doctor covered by Medicare Part B at no cost to you. Your doctor creates or updates a personalized prevention plan based on your current health. Not the same as a physical exam; it focuses on health risk assessment and prevention planning.

The percentage of costs you pay for a covered health care service after you have paid your deductible. For example, under Original Medicare Part B, you pay 20% of the Medicare-approved amount for most doctor services.

Choosing Medicare coverage becomes easier when you stop looking for a universally better plan and start asking what fits your life. Your doctors, prescriptions, travel habits, and comfort with unexpected bills all matter.

A plan that works well for your neighbor may create difficulties for you. Perhaps you see specialists across different health systems. Perhaps keeping monthly expenses manageable matters most. Neither priority is wrong.

Understanding Medicare Advantage vs Medigap means looking beyond advertisements and comparing how each approach works when you actually need care.

Understand What You Are Comparing

Medicare Advantage and Medigap serve different purposes.

Medicare Advantage is a way to receive your Medicare benefits through a private insurance plan. You remain in Medicare, but the plan administers your covered hospital and medical benefits. Most plans also include prescription drug coverage.

Medigap, also called Medicare Supplement Insurance, works alongside Original Medicare. It helps pay certain expenses left after Medicare pays, depending on the policy.

You cannot use Medigap to pay Medicare Advantage copayments or deductibles. The meaningful comparison is Medicare Advantage versus Original Medicare with Medigap and, when needed, separate drug coverage. Medicare explains this distinction in its Medigap basics.

Compare Your Total Costs

A monthly premium is only part of your healthcare budget.

With Medicare Advantage, review the plan premium alongside copayments, coinsurance, deductibles, and its annual limit for covered medical services. You generally continue paying your Part B premium.

That medical spending limit does not include every expense. Premiums, prescription costs, and services outside the plan’s coverage need separate consideration.

With Medigap, you pay a policy premium in addition to applicable Medicare and drug plan premiums. Depending on the policy, more of your expenses for Medicare covered services may be handled by your supplement.

Ask yourself: would you prefer paying more regularly for greater predictability, or accepting more costs when you receive care?

Compare a routine year with a year involving hospital treatment and ongoing specialist appointments. Medicare’s coverage comparison outlines the financial differences.

Check Access to Your Doctors

Start with the people already involved in your care.

Original Medicare generally lets you visit doctors and hospitals that accept Medicare throughout the country. Most standard Medigap policies follow that access, although Medicare SELECT policies have additional network requirements.

Medicare Advantage plans may require you to use a provider network for routine care. Some allow care outside the network at a different cost.

Ask your doctor’s office about the exact plan you are considering. Accepting Medicare does not necessarily mean participating in a particular Medicare Advantage plan.

Confirm your hospital, specialists, laboratories, and treatment facilities too. A familiar insurance company name is not enough to establish that your care team participates.

Understand Referrals and Approval Requirements

Doctor access and permission for a service are separate questions.

Some Medicare Advantage plans require specialist referrals. Plans may also require prior authorization before covering certain treatments, equipment, or services.

Original Medicare generally has fewer prior authorization requirements, but coverage rules still apply. Having Medigap does not turn a service Medicare excludes into a covered benefit.

If you receive ongoing treatment, ask how the proposed coverage handles it. Discuss therapy, imaging, medical equipment, and specialist procedures before enrolling.

The practical question is not simply whether something is covered. It is what must happen before you can receive covered care.

Review Prescriptions and Additional Benefits

Most Medicare Advantage plans include prescription coverage. Compare your medications against the plan’s covered drug list, and check pharmacy arrangements and restrictions.

Medigap policies sold today do not include prescription drug coverage. People using Original Medicare with Medigap generally consider a separate Part D plan unless they have other suitable drug coverage.

Some Medicare Advantage plans include dental, vision, hearing, or fitness benefits. Review their limits and participating providers before assigning them much value.

Medigap generally does not cover routine dental care, eyeglasses, or hearing aids. Its central purpose is helping with eligible Medicare expenses. See Medicare’s explanation of what Medigap covers.

Consider Where You Spend Your Time

Travel can change which coverage feels practical.

If you regularly stay with family elsewhere in the country, broad access through Original Medicare may be useful. With Medicare Advantage, check how the specific plan handles routine care while you are away.

Emergency coverage is different from access to scheduled appointments outside your usual area.

For international travel, neither approach should be assumed to provide comprehensive protection. Some Medigap policies include limited foreign travel emergency benefits, and some Medicare Advantage plans offer travel benefits. Read the conditions before relying on them.

Think About Switching Before You Enroll

Do not choose coverage assuming you can always move into Medigap later without questions.

Medigap has a protected enrollment opportunity linked to age and Part B enrollment. Outside that window, insurers may use medical underwriting unless another protection applies.

State rules and certain circumstances can provide additional rights. However, permission to leave Medicare Advantage does not automatically guarantee acceptance into Medigap.

Before making a switch, confirm your eligibility, application outcome, prescription arrangements, and effective dates. Medicare’s Medigap buying guidance explains these protections.

Frequently Asked Questions

Is Medicare Advantage always cheaper?

No. Compare premiums with expected treatment costs, prescription expenses, and possible spending during a difficult health year. The answer depends on the specific coverage and your needs.

Does Medigap cover everything?

No. Benefits depend on the policy, and expenses for services Medicare does not cover generally remain your responsibility.

Can I have Medicare Advantage and Medigap together?

Medigap cannot supplement Medicare Advantage. Choose the coverage approach that fits your situation rather than treating them as complementary policies.

Which option is better for frequent specialist visits?

Check the specialists you need, referral rules, treatment approvals, and expected costs. Frequent visits alone do not determine the best choice.

Choose With Your Own Priorities in Mind

The better option supports your care, fits your budget, and leaves you comfortable with its rules.

Prepare your doctor and medication lists, identify your priorities, and find a Medicare agent through Find My Medicare Agent. An independent professional can help you compare available options and understand the tradeoffs before you decide.

The amount you must pay out of pocket for covered health care services before your insurance begins to pay. Medicare Part A and Part B each have separate deductibles. Many Medicare Advantage plans have their own deductibles.

Many older adults eventually need some support at home, whether that means preparing meals, doing laundry, shopping for groceries, bathing safely, or simply having someone nearby for assistance. Because Medicare provides health coverage for seniors, it is understandable to assume that it may also pay for this type of household or personal support. However, Medicare generally covers home-based services only when they are medically necessary and provided by qualified healthcare professionals. Understanding the difference between medical home healthcare and everyday personal assistance can help you avoid unexpected expenses and explore other available options. Home Services Medicare May Cover Medicare may pay for certain services delivered in your home when they are prescribed by a doctor and connected to a medical condition, illness, injury, or recovery. Covered services may include: Skilled nursing visits provided by a licensed nurse Wound care, injections, and medication-related support Physical therapy after surgery, illness, or injury Occupational therapy to help restore daily functioning Speech-language therapy Limited skilled nursing care following a hospital stay Medical social services in qualifying situations These services are considered skilled healthcare because they require the knowledge and supervision of trained medical professionals. Depending on the circumstances, eligible services may be covered through Medicare Part A or Medicare Part B. Coverage requirements can include being under a doctor’s care, needing part-time skilled services, and using a Medicare-certified home health provider. The Difference Between Skilled Care and Daily Living Assistance One of the most important distinctions in Medicare is the difference between skilled care and custodial care. Skilled care addresses a medical need and must be performed by a licensed healthcare provider. Custodial care focuses on helping someone complete routine activities that do not normally require medical training. Medicare usually does not pay for assistance such as: Cooking meals Cleaning the home Washing clothes Grocery shopping Running errands Help with bathing or dressing Assistance with using the bathroom General supervision Social companionship Routine safety monitoring These services may be very important for a person’s comfort, safety, and independence. However, Medicare typically does not classify them as medical treatment. Personal care may sometimes be included for a limited period when it is provided alongside qualifying skilled home health services. It is generally not covered when household or personal assistance is the only service needed. Can Medicare Advantage Offer Additional Home Support? Some Medicare Advantage plans may provide supplemental benefits that are not included in Original Medicare. Depending on the plan and the member’s eligibility, these additional benefits may include: Limited light housekeeping Short-term meal delivery Transportation to approved appointments Home safety assessments Grab bars or other safety modifications Personal support following a hospital stay Assistance designed to reduce the risk of readmission These benefits are not available through every Medicare Advantage plan. The amount of support, eligibility rules, service limits, and approved providers can vary considerably. Some benefits may only be available to members with specific chronic conditions or medical needs. Others may be restricted to a limited number of hours or visits. Before enrolling, review the plan’s Evidence of Coverage or speak with a licensed Medicare professional to confirm exactly what is included. Why Medicare Limits Household Assistance Medicare was primarily created to cover medical treatment rather than ongoing help with ordinary daily activities. As a result, Medicare focuses on services intended to diagnose, treat, or manage a health condition. Long-term assistance with cooking, cleaning, dressing, or supervision generally falls outside that purpose. This does not mean daily support is unimportant. It simply means that another program, insurance product, or community service may be responsible for providing or funding it. Other Ways to Find In-Home Assistance When someone needs regular non-medical support, it may be helpful to explore resources outside Original Medicare. Medicare Advantage Supplemental Benefits Review Medicare Advantage plans available in your area to determine whether any include in-home assistance, meal support, transportation, or safety benefits. Medicaid Programs People who meet their state’s financial and medical eligibility requirements may qualify for Medicaid-funded home and community-based services. These programs may provide personal care or other assistance that Medicare does not normally cover. Long-Term Care Insurance A long-term care insurance policy may help pay for custodial care, personal assistance, assisted living, or extended home support, depending on the policy terms. Local Aging and Community Organizations Area Agencies on Aging, county programs, nonprofit groups, and community organisations may offer: Meal delivery Transportation Caregiver support Home safety assistance Companion programs Low-cost household help Benefits counselling Availability and eligibility differ by location, so contacting local senior-service organisations can be a useful starting point. Private In-Home Care Providers Families may also hire a home care agency or independent caregiver directly. This is usually paid privately unless another insurance policy or assistance program applies. Questions to Ask Before Selecting a Plan When comparing Medicare Advantage plans or discussing home support with an agent, consider asking: Does the plan include any in-home support benefits? What services are covered? How many hours or visits are provided? Who qualifies for the benefit? Is a doctor’s referral required? Must I use an approved service provider? Is the benefit temporary or available throughout the year? Are meals, transportation, or home modifications included? Will I have any copayments or additional costs? Getting these details in writing can help prevent confusion after enrollment. Planning Ahead for Changing Care Needs A person who is fully independent today may need more assistance in the future. Health changes, reduced mobility, recovery from surgery, and caregiver availability can all affect the amount of help required at home. Planning ahead may involve: Reviewing Medicare coverage annually Comparing Medicare Advantage supplemental benefits Researching local senior programs Discussing caregiving responsibilities with family members Considering long-term care insurance before extensive care is needed Creating a budget for possible private home assistance Asking healthcare providers about medically necessary home health services Preparing early can make it easier to arrange appropriate care when circumstances change. Medicare may cover skilled medical services provided in the home, but it generally does not pay for ongoing cooking, cleaning, companionship, shopping, or other routine personal assistance. Certain Medicare Advantage plans may offer limited in-home benefits, and Medicaid, long-term care insurance, local community programs, or private care providers may provide additional options. The right solution often involves combining Medicare-covered healthcare with other support resources. Before making a decision, carefully review plan benefits and speak with a qualified professional who can help you understand the choices available in your area.

Equipment and supplies ordered by a doctor for use in the home. Examples include wheelchairs, walkers, hospital beds, oxygen equipment, and blood sugar monitors. Medicare Part B covers DME that is medically necessary.

A range of health care services that can be given in your home for an illness or injury, including skilled nursing care, physical therapy, speech-language pathology, and medical social services. Medicare Part A and/or Part B cover home health care if you meet certain conditions.

Medical and surgical services provided at a hospital or clinic when you are not admitted as an inpatient. Covered under Medicare Part B. You pay coinsurance or copays for outpatient services.

Care you receive when you are formally admitted to a hospital. Medicare Part A covers inpatient hospital care after you meet your deductible. Being in a hospital as an inpatient is different from outpatient observation status, which is covered under Part B.

An extra amount added to your Part B and Part D premiums if your income is above a certain threshold, based on the tax return from two years earlier. IRMAA is reassessed annually and can be appealed after certain life-changing events like retirement.

A higher premium added permanently to your Part B or Part D premium if you don't sign up for coverage when you are first eligible and don't have other qualifying coverage. The Part B penalty is 10% for each full 12-month period you were eligible but didn't enroll. The Part D penalty is 1% of the national base premium per month.

Medical insurance. Covers most doctor services, outpatient care, preventive services, home health care, and durable medical equipment. You pay a monthly premium for Part B (adjusted based on income for higher earners).

The formal name for Medicare Advantage. A type of Medicare coverage offered by private insurers that combines Part A, Part B, and usually Part D coverage into one plan.

A classification used when a hospital monitors your condition before deciding whether to formally admit you. Even if you stay overnight, observation status is considered outpatient care (Part B), not inpatient (Part A). This distinction matters for skilled nursing facility eligibility.

The traditional fee-for-service Medicare program offered directly through the federal government, consisting of Part A (hospital insurance) and Part B (medical insurance). Under Original Medicare, you can go to any doctor or hospital that accepts Medicare.

The amount you pay for your Medicare coverage, typically deducted monthly. Part A is premium-free for most people. Part B has a standard monthly premium (adjusted for income). Medicare Advantage and Part D plans have their own premiums in addition to Part B.

Health care services that help detect or prevent illness and health problems. Medicare Part B covers many preventive services — such as mammograms, colonoscopies, flu shots, and the "Welcome to Medicare" visit — often at no cost to you.

A Medicare Savings Program for people with the lowest incomes. If you qualify as a QMB, your state pays your Part A and Part B premiums, and providers who accept Medicare cannot charge you copays, coinsurance, or deductibles.

A Medicare Savings Program that helps pay Part B premiums for people with slightly higher income than SLMB allows. Funding is limited each year and applications are approved on a first-come, first-served basis.

A Medicare Savings Program that helps pay Part B premiums for people with income modestly above the Qualified Medicare Beneficiary (QMB) limit.

Medical visits and services delivered remotely by phone or video instead of in person. Medicare covers a range of telehealth services under Part B, with coverage rules that have expanded in recent years.

A one-time preventive visit covered by Medicare Part B during the first 12 months you have Part B. Your doctor reviews your health status, helps you set up a prevention plan, and provides referrals for screenings — at no cost to you if your provider accepts assignment.