How to Understand Medicare Part B Online

What Medicare Part B Covers and What It Doesn't

Medicare Part B is the portion of Original Medicare that covers medical services and supplies that Part A does not pay for. Understanding what Part B covers is the first step in comprehending how this insurance works. Part B primarily covers doctor visits, outpatient hospital care, medical equipment, and certain preventive services. This includes visits to your primary care physician, specialist consultations, laboratory tests, X-rays, and other diagnostic procedures performed outside of a hospital setting.

Part B also covers mental health services, including visits to psychiatrists and psychologists. Physical therapy, occupational therapy, and speech-language pathology services are covered when medically necessary and ordered by a doctor. Preventive services covered at no cost to you include annual wellness visits, certain cancer screenings, cardiovascular disease screenings, and diabetes screenings. Vaccinations such as the flu shot, pneumococcal vaccine, and hepatitis B vaccine are also covered without cost-sharing.

However, Part B does not cover everything. Services and items that fall outside Part B coverage include dental care (cleanings, fillings, extractions), routine eye exams and eyeglasses (though it does cover certain eye conditions like diabetic retinopathy), hearing aids, long-term care in nursing homes, and most cosmetic surgery. Prescription medications taken at home are not covered under Part B; they fall under Part D prescription drug coverage. Additionally, services deemed not medically necessary are not covered, nor are most routine foot care or checkups.

Understanding these boundaries helps you plan for out-of-pocket costs. Many people choose supplemental coverage (Medigap) or Medicare Advantage plans to help cover services that Part B does not pay for. Knowing what Part B covers allows you to make informed decisions about your healthcare options and budget accordingly.

Practical Takeaway: Review the specific services you use regularly and cross-reference them against Part B coverage details. This helps you understand which costs Medicare will share and where you may need additional coverage or savings strategies.

Understanding Part B Costs: Premiums, Deductibles, and Coinsurance

Medicare Part B involves several types of costs that beneficiaries need to understand. The monthly premium is what you pay to have Part B coverage. As of 2024, the standard Part B premium is $174.70 per month, though this amount changes annually and may be higher for individuals with higher incomes. Some people with lower incomes may pay reduced premiums or have their premiums paid by their state Medicaid program.

Beyond the monthly premium, there is an annual deductible. For 2024, the Part B deductible is $240 per year. This means you must pay $240 out of your own pocket for covered services before Medicare begins to share the cost. After you meet your deductible, Medicare typically pays 80 percent of the approved amount for covered services, while you pay the remaining 20 percent as coinsurance. This coinsurance continues for the rest of the year—there is no out-of-pocket maximum under Original Medicare Part B.

It is important to note that your doctor's charge and Medicare's approved amount may differ. Medicare sets an approved amount for each service, and doctors who accept Medicare must accept this amount as payment in full. If a doctor does not accept Medicare, they may charge more, and you could owe the difference. These doctors are called non-participating providers.

Some preventive services are covered with zero coinsurance and no deductible required. This means you pay nothing out of pocket for these services. Examples include annual wellness visits, certain cancer screenings, and vaccinations. Understanding which services are preventive helps you take advantage of this benefit.

Practical Takeaway: Track your deductible spending throughout the year. Once you have paid $240 toward your deductible, your out-of-pocket costs shift to 20 percent coinsurance for most services. Keeping records of what you have paid helps you understand when you have met your deductible.

How to Use Your Medicare Part B Card and Access Services

Your Medicare Part B coverage comes with a Medicare card that you should carry with you to all medical appointments. This card contains essential information that healthcare providers need to process your claims and verify your coverage. The card displays your Medicare number, which is unique to you, your name, the dates your coverage began, and your hospital and medical insurance claim numbers.

When you schedule a doctor's appointment, you should inform the office that you have Medicare Part B coverage. The office staff will ask for your Medicare card and may request additional information such as whether you have supplemental insurance. Before your visit, confirm that the doctor accepts Medicare assignment, which means they accept Medicare's approved payment amount as full payment. Most doctors and healthcare facilities accept Medicare, but it is worth verifying, especially if you are seeing a specialist.

At your appointment, you will typically pay any applicable coinsurance (20 percent after your deductible is met) at the time of service or receive a bill later. The healthcare provider will submit a claim to Medicare on your behalf. You will receive an Explanation of Benefits (EOB) document that shows what services were provided, what Medicare paid, and what you owe. Review these documents carefully to ensure the information is accurate.

For services outside a traditional doctor's office, such as laboratory tests, imaging, or procedures performed at an outpatient facility, the same process applies. Bring your Medicare card, verify that the facility accepts Medicare, and ask about your expected out-of-pocket costs before the service. Many facilities can estimate your costs in advance based on your deductible status.

Practical Takeaway: Keep your Medicare card in a safe place and bring it to every medical appointment. If you notice errors on your Explanation of Benefits, contact Medicare or your provider to correct them promptly.

Preventive Services and Screenings Available at No Cost

One of the most valuable aspects of Medicare Part B is the coverage of certain preventive services at no cost to you—meaning no deductible, no coinsurance, and no copay. These services are designed to detect diseases early when treatment is often more effective and less expensive. Understanding which preventive services are available helps you take advantage of this benefit.

Annual wellness visits are covered at no cost. During this visit, your doctor reviews your health history, conducts a physical examination, and may order screening tests based on your age and risk factors. This is different from a sick visit and focuses on prevention and health maintenance. Cancer screenings covered at no cost include mammograms for breast cancer screening in women age 40 and older (annually for ages 50 and older), colonoscopies for colorectal cancer screening starting at age 45, Pap tests for cervical cancer in women, and lung cancer screening for current and former smokers age 50 to 80.

Cardiovascular disease screenings are also covered, including blood pressure checks, cholesterol screening (lipid panel), and screening for abdominal aortic aneurysm in men age 65 to 75 who have smoked. Diabetes screenings are covered for people at high risk or with certain conditions. Bone density screenings (DEXA scans) are covered for women age 65 and older and for men age 70 and older, as well as for people at risk of osteoporosis.

Preventive care visits and screenings also include counseling services for smoking cessation, depression screening, obesity screening and counseling, and alcohol misuse screening. Vaccinations covered at no cost include the annual influenza vaccine, pneumococcal vaccines, hepatitis B vaccine, Td or Tdap vaccine, shingles vaccine (Shingrix), and RSV vaccine for adults age 60 and older. Vision and hearing screening are not covered, but certain eye conditions such as diabetic retinopathy treatment are covered under Part B.

Practical Takeaway: Schedule your annual wellness visit and discuss which preventive screenings are recommended for your age and health status. Taking advantage of these no-cost services can help catch health problems early and may reduce your overall healthcare costs.

Managing Multiple Insurance Coverage With Part B

Many people have Medicare Part B alongside other insurance coverage, which affects how costs are handled and which insurance pays first. Understanding coordination of benefits is important for managing your healthcare finances effectively. If you have employer-sponsored insurance through a current job or a spouse's current job, that insurance typically pays first before Medicare. This is called coordination of benefits, and it ensures that Medicare