Medicare Part B in 2026

Quick Answer: Medicare Part B covers outpatient medical services including doctor visits, preventive care, diagnostic tests, and durable medical equipment. In 2026, you’ll pay a monthly premium, annual deductible, and 20% coinsurance for covered services.

Understanding your healthcare options becomes more important as you approach 65. Medicare Part B represents a significant piece of your coverage puzzle, but the rules, costs, and enrollment requirements can feel complex when you’re trying to make the right decisions for your situation.

You’re not alone if Medicare Part B seems confusing at first. With over 64 million Americans currently enrolled in Medicare, getting clear answers about what Part B covers, what it costs, and how to enroll properly can help you avoid expensive mistakes and coverage gaps that might affect your health and budget.

What Does Medicare Part B Cover?

Medicare Part B focuses on outpatient medical needs that happen outside of hospital stays. Think of it as your primary insurance for doctor visits, routine checkups, and the medical equipment you might need at home. This coverage becomes the foundation for most of your day-to-day healthcare interactions.

Unlike Medicare Part A, which handles hospital stays, Part B takes care of services you receive while living at home or visiting medical facilities as an outpatient. The coverage includes doctor visits, preventive care, diagnostic tests, and durable medical equipment that helps you maintain your health and independence.

Preventive Services and Screenings

Your preventive care under Medicare Part B includes annual wellness visits, flu shots, and important cancer screenings like mammograms and colonoscopies. These services often come with no out-of-pocket costs when you see providers who accept Medicare assignment.

Preventive services also cover diabetes screenings, cardiovascular disease testing, and bone density measurements. Getting these screenings on schedule can help catch health issues early when they’re easier and less expensive to treat.

Outpatient Medical Services

When you visit your doctor’s office, urgent care center, or outpatient clinic, Medicare Part B typically covers these services. This includes diagnostic imaging like X-rays and MRIs, physical therapy sessions, and mental health counseling.

Part B also covers ambulance services when medically necessary, some home health services, and durable medical equipment like wheelchairs, walkers, and oxygen equipment. If you need ongoing treatment for chronic conditions, Part B helps manage those regular medical expenses.

What Isn’t Covered by Part B?

Medicare Part B does not cover most prescription drugs, which means you’ll want to consider Medicare Part D for medication coverage. Routine dental care, vision care beyond certain conditions, and hearing aids typically aren’t covered either.

Cosmetic surgery, acupuncture, and most alternative treatments fall outside Part B coverage. Long-term care services and most care received outside the United States also require separate coverage or out-of-pocket payment.

How Much Does Medicare Part B Cost in 2026?

Your Medicare Part B costs in 2026 include a monthly premium, an annual deductible, and coinsurance for covered services. The standard monthly premium applies to most beneficiaries, but higher-income individuals pay additional surcharges based on their tax returns from two years prior.

Beyond the premium, you’ll also handle a yearly deductible and ongoing coinsurance responsibilities. Understanding these costs upfront helps you budget effectively and consider whether supplemental insurance makes sense for your situation.

Understanding the Monthly Premium

The standard Medicare Part B premium applies if your modified adjusted gross income stays below $103,000 as an individual or $206,000 for married couples filing jointly. If your income exceeds these thresholds, you’ll pay an Income-Related Monthly Adjustment Amount (IRMAA) surcharge.

Higher-income beneficiaries can pay significantly more each month, with surcharges ranging from moderate increases to substantial premium adjustments. Social Security typically deducts your Part B premium directly from your monthly benefits if you receive them.

Part B Deductible and Coinsurance

After meeting your annual deductible of $240, you’ll pay 20% coinsurance for most Medicare-approved services. This means if your doctor visit costs $200 after the deductible, you’ll pay $40 while Medicare covers the remaining $160.

The 20% coinsurance applies to most outpatient services, but some preventive care comes with no coinsurance requirements. Many people find Medicare supplement insurance helpful for managing these ongoing costs.

Common Mistakes to Avoid

Many people delay enrolling in Medicare Part B because they think they don’t need it yet, but this can lead to permanent penalties that increase your premiums for life. The penalty equals 10% of the standard premium for each 12-month period you could have had Part B but didn’t sign up.

Another frequent mistake involves assuming employer insurance automatically qualifies as creditable coverage. While many employer plans do qualify, you should verify this with your HR department before declining Part B enrollment. Missing your enrollment window because of incorrect assumptions can be costly.

Some people also underestimate the importance of understanding which doctors accept Medicare assignment. Seeing providers who don’t accept assignment can result in higher out-of-pocket costs, even with Medicare coverage.

Who Is Eligible for Medicare Part B?

Medicare Part B eligibility typically begins when you turn 65, regardless of whether you’re retired or still working. You may also qualify earlier if you receive Social Security Disability Insurance for at least 24 months or have certain conditions like ALS or end-stage renal disease.

If you already receive Social Security benefits when you turn 65, your Medicare Part B enrollment may happen automatically. However, if you’re not receiving Social Security yet, you’ll need to actively enroll during your Initial Enrollment Period to avoid gaps in coverage.

Special Eligibility Rules for Disabilities

Individuals with specific conditions like ALS (Lou Gehrig’s disease) become eligible for Medicare immediately upon receiving Social Security Disability benefits, without the usual 24-month waiting period. People with end-stage renal disease can also qualify for Medicare before age 65.

If you’re under 65 and receiving disability benefits, your Medicare eligibility begins automatically after 24 months of disability payments. You’ll receive information about your coverage options before your Medicare starts.

Medicare Part B and Working Seniors

Working seniors may delay Medicare Part B enrollment if they have qualifying employer insurance that covers 20 or more employees. This special enrollment right allows you to avoid late enrollment penalties when you eventually sign up for Medicare.

However, if your employer has fewer than 20 employees, Medicare becomes the primary payer, and you should enroll in Part B during your Initial Enrollment Period. Understanding these coordination rules helps prevent coverage gaps and unexpected medical bills.

Avoiding Medicare Part B Penalties

Late enrollment penalties can permanently increase your Medicare Part B premiums, making it crucial to understand your enrollment timeline. The Medicare Part B penalty equals 10% of the standard premium for every 12-month period you delay enrollment without qualifying coverage.

These penalties continue for as long as you have Medicare Part B, potentially costing thousands of dollars over your lifetime. Understanding your Initial Enrollment Period and Special Enrollment Period rights helps you avoid these unnecessary expenses.

What Is the Initial Enrollment Period?

Your Initial Enrollment Period (IEP) spans seven months, starting three months before your 65th birthday month and ending three months after. This gives you multiple opportunities to enroll, but enrolling during the first three months ensures your coverage starts right when you turn 65.

If you enroll during your birthday month or the three months after, your coverage may be delayed. Planning ahead and enrolling early in your IEP prevents coverage gaps and ensures smooth healthcare access.

Special Enrollment Periods (SEPs)

Special Enrollment Periods allow you to enroll in Medicare Part B without penalties if you had qualifying coverage through an employer or certain other sources. You typically have eight months after your employer coverage ends to enroll in Part B.

To use a Special Enrollment Period, you’ll need documentation proving your previous coverage was creditable. Working with Medicare enrollment assistance can help ensure you have the right paperwork and meet all requirements.

How to Enroll in Medicare Part B

Enrollment in Medicare Part B can happen automatically if you’re already receiving Social Security benefits, or you may need to take action depending on your situation. The Social Security Administration handles Medicare enrollment through their website, by phone, or at local offices.

If you’re not automatically enrolled, you’ll need to complete an application during your enrollment period. Having the right information ready makes the process smoother and helps prevent delays in your coverage start date.

Steps to Enroll in Part B

Start by reviewing your eligibility and enrollment timeline to understand when you can enroll and when your coverage will begin. Gather important documents like your Social Security card, information about current health insurance, and details about any employer coverage.

You can apply online at the Social Security Administration website, call their toll-free number, or visit a local Social Security office. Online applications often provide the fastest processing, but phone and in-person options offer personalized assistance if you have questions.

What If You Miss the Enrollment Window?

If you miss your Initial Enrollment Period and don’t qualify for a Special Enrollment Period, you’ll need to wait for the General Enrollment Period from January 1 through March 31 each year. Your coverage would then start July 1, creating a potential gap in coverage.

During this waiting period, you’ll also be subject to late enrollment penalties once your coverage begins. This is why understanding your enrollment rights and acting during your Initial Enrollment Period is so important for avoiding both coverage gaps and financial penalties.

Filling Gaps in Medicare Part B Coverage

Medicare Part B covers many essential services, but the 20% coinsurance and annual deductible can add up to significant out-of-pocket costs. Supplemental coverage options like Medigap insurance or Medicare Advantage plans can help manage these expenses and provide additional benefits.

Prescription drug coverage through Medicare Part D is also worth considering since Part B doesn’t cover most medications. Combining Part B with supplemental coverage creates a more comprehensive healthcare plan that better protects your budget and health needs.

Medigap Plans

Medigap insurance helps cover the coinsurance, deductibles, and other out-of-pocket costs that Medicare Part B doesn’t pay. These standardized plans work alongside your Medicare coverage to reduce your financial responsibility when you receive covered services.

Popular Medigap plans like Plan G cover the 20% coinsurance and most other gaps in Medicare coverage, except for the Part B deductible. This predictable coverage helps you budget for healthcare costs and avoid surprise medical bills.

Medicare Advantage Plans

Medicare Advantage plans bundle Part A, Part B, and often Part D coverage into a single plan, frequently with additional benefits like vision, dental, or wellness programs. These plans may offer different cost structures than Original Medicare with supplemental coverage.

Many Medicare Advantage plans include annual out-of-pocket maximums that limit your total healthcare expenses each year. This can provide valuable financial protection, especially if you need extensive medical care or have ongoing health conditions.

Frequently Asked Questions

What does Medicare Part B cover?

Medicare Part B covers outpatient medical services including doctor visits, preventive care like annual wellness exams and screenings, diagnostic tests, physical therapy, mental health services, and durable medical equipment. It also covers ambulance services and some home health care when medically necessary.

How much does Medicare Part B cost?

Medicare Part B costs include a monthly premium, an annual deductible of $240, and 20% coinsurance for covered services after meeting the deductible. Higher-income beneficiaries pay additional IRMAA surcharges based on their tax returns from two years prior.

When can I enroll in Medicare Part B?

Most people can enroll during their Initial Enrollment Period, which spans seven months around their 65th birthday. You may also qualify for Special Enrollment Periods if you have qualifying employer coverage, or you can enroll during the annual General Enrollment Period from January 1-March 31.

What happens if I delay enrolling in Medicare Part B?

Delaying Medicare Part B enrollment without qualifying coverage results in a permanent penalty equal to 10% of the standard premium for each 12-month period you could have had Part B but didn’t enroll. This penalty continues for as long as you have Medicare Part B coverage.

Does Medicare Part B cover prescription drugs?

Medicare Part B does not cover most prescription drugs. You’ll want to consider enrolling in Medicare Part D for prescription drug coverage, or choose a Medicare Advantage plan that includes drug benefits to ensure comprehensive coverage for your medications.

Can I delay Part B if I’m still working?

Yes, if you have qualifying employer insurance from a company with 20 or more employees, you can delay Medicare Part B enrollment without penalties. You’ll have a Special Enrollment Period to sign up when your employer coverage ends, typically lasting eight months.

What is IRMAA for Medicare Part B?

IRMAA (Income-Related Monthly Adjustment Amount) is an additional surcharge that higher-income beneficiaries pay on top of the standard Medicare Part B premium. The surcharge amount depends on your modified adjusted gross income from your tax return two years prior to the current year.

How do I appeal a denied Medicare Part B claim?

If Medicare denies a Part B claim that you believe should be covered, you can file an appeal through Medicare’s five-level appeals process. Start by contacting the Medicare Administrative Contractor listed on your denial notice, and consider working with a Medicare specialist for complex appeals.