Free medicare health screenings are one of the most underused benefits in the entire program. Part B covers dozens of preventive tests at no charge, yet millions of beneficiaries never schedule them. Research published in Health Affairs found that use of the Annual Wellness Visit among eligible beneficiaries rose only from 7.5% in 2011 to 18.
8% in 2015. Later figures show roughly 24% of fee-for-service beneficiaries using it by 2017. That leaves three out of four people skipping a visit that costs them nothing. Summer is a practical time to fix that gap. Doctor schedules loosen after the winter rush, and family visits make it easier to help a parent book an appointment.
The stakes are real. Beneficiaries who complete a wellness visit are far more likely to get follow-up testing. One analysis found 88% of wellness visit recipients received at least one of seven core preventive services, compared with 63% of those who skipped it. Understanding which free medicare health screenings you qualify for is the first step toward closing that gap this season.
What Free Medicare Health Screenings Cover Under Part B
Medicare Part B pays 100% of the approved amount for most preventive services. There is no deductible and no coinsurance. The one condition matters: your provider must accept Medicare assignment. If a doctor does not accept assignment, the $0 protection can disappear.
The list is broad. It includes cancer screenings, cardiovascular blood tests, diabetes screening, bone density scans, depression screening, and vaccines. According to Medicare.gov, covered items range from abdominal aortic aneurysm ultrasound to glaucoma testing to prostate cancer exams. Vaccines for flu, pneumococcal disease, hepatitis B, and COVID-19 also carry no cost under Part B.
Medicare Advantage enrollees get the same protection. Plans from UnitedHealthcare, Humana, Aetna, Cigna, and Blue Cross affiliates must cover every Part B preventive service at $0 when you stay in network. However, going out of network can trigger cost sharing. Check your plan directory before booking. A new benefit arrived this year, too. Beginning January 1, 2026, CMS added a standardized physical activity and nutrition assessment that providers can bill every six months as part of the Annual Wellness Visit. As a result, more free medicare health screenings now fit inside a single appointment.
Your Summer Screening Checklist by Age and Risk
Eligibility depends on age, sex, and documented risk factors. Frequency limits are strict. Booking too early is the most common reason a covered test gets denied. Below are the core intervals for the most requested free medicare health screenings.
| Screening | Who Qualifies | How Often |
|---|---|---|
| Annual Wellness Visit | Enrolled in Part B more than 12 months | Once every 12 months |
| Welcome to Medicare visit | First 12 months of Part B | Once per lifetime |
| Screening mammogram | Women 40 and older | Once every 12 months |
| Cardiovascular blood panel | All beneficiaries | Once every 5 years |
| Diabetes screening | Prediabetes or risk factors | Up to 2 per year |
| Bone mass measurement | Estrogen deficiency, steroid use, other risk | Once every 24 months |
| Lung cancer LDCT scan | Ages 50–77, 20 pack-year history | Once every 12 months |
| Depression screening | All beneficiaries, primary care setting | Once every 12 months |
| Screening colonoscopy | Average risk | Once every 120 months |
Lung cancer screening rules tightened and loosened at the same time. CMS lowered the minimum age from 55 to 50 and cut the required smoking history from 30 pack-years to 20. You must also be symptom-free, be a current smoker or have quit within 15 years, and hold a written order from your provider. Miss any one of the five criteria and coverage fails.
Colorectal screening offers several paths. A stool DNA test is covered every three years starting at age 45. A fecal occult blood test is covered annually. A screening colonoscopy is covered every 10 years for average-risk patients, or every 24 months for high-risk patients. There is no upper age cutoff for colonoscopy.
The Traps That Turn a $0 Test Into a Bill
Not every preventive service is truly free, and the exceptions catch people off guard. Knowing the boundaries protects the value of your free medicare health screenings.
The colonoscopy polyp rule is the best-known trap. When a screening colonoscopy becomes therapeutic because a polyp is removed, coinsurance applies. Under Section 122 of the Consolidated Appropriations Act of 2021, that share is 15% through 2026. It drops to 10% for 2027 through 2029 and reaches 0% in 2030. Meanwhile, patients still owe a share of the physician and facility charges mid-procedure.
Screening versus diagnostic is the second trap. A screening mammogram is paid at 100%. A diagnostic mammogram, ordered because of a lump or an abnormal result, is paid at 80% after the Part B deductible. Glaucoma testing works similarly and carries 20% coinsurance plus the deductible, even though it appears on preventive lists. Prostate screening splits, too. The PSA blood test is free annually for men over 50, while the digital rectal exam carries coinsurance.
The third trap is confusion between a wellness visit and a physical. KFF Health News has documented this repeatedly. The Annual Wellness Visit is a health risk review, medication reconciliation, and prevention plan. It is not a hands-on physical exam, and Medicare does not cover routine annual physicals. If your doctor treats a new symptom during the visit, that portion becomes a regular office visit with cost sharing attached.
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How to Book and Get the Most From Free Medicare Health Screenings
Start with your card and your calendar. Pull your Medicare number and note the month your Part B coverage began. If that date is under 12 months old, ask for the Welcome to Medicare visit instead of the Annual Wellness Visit. Booking the wrong one is a common denial cause.
Next, verify dates of service. Log in at Medicare.gov and open your claims history, or call 1-800-MEDICARE. Look up when you last had a mammogram, lipid panel, or bone density scan. In most cases, the frequency clock runs from the exact month of the prior test, not the calendar year. Then confirm the provider accepts assignment before the appointment.
When you call the office, use precise language. Say you want a preventive screening covered under Part B, and ask staff to confirm the billing code is a screening code. Bring a written list of medications, family history, and any falls or memory concerns. Those details drive the risk assessment that unlocks additional covered tests, such as diabetes screening or the abdominal aortic aneurysm ultrasound.
If a claim comes back denied, do not pay immediately. Free counseling is available through your State Health Insurance Assistance Program, which operates in every state at no charge. AARP and the National Council on Aging publish plain-language checklists as well. SHIP counselors can review the Medicare Summary Notice and help file an appeal within the 120-day window.
Frequently Asked Questions
Do I need a referral for free medicare health screenings?
Most screenings under Original Medicare need no referral, though some require a provider’s written order. Lung cancer LDCT scans are the clearest example. Medicare Advantage plans may add their own referral or prior authorization rules.
Is the Annual Wellness Visit the same as a yearly physical?
No, and the difference matters financially. The wellness visit is a prevention planning session covered at 100%. A traditional head-to-toe physical is not a Medicare benefit, so your doctor can bill you for it separately.
What if my doctor does not accept Medicare assignment?
You could face charges up to 15% above the approved amount, known as an excess charge. Ask the front desk directly before scheduling. Medicare.gov’s care compare tool lets you filter for participating providers in your area.
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Official Sources & Resources
For verified information on Medicare regulations and consumer protection:
- Medicare.gov (Official Site): medicare.gov
- CMS (Centers for Medicare & Medicaid Services): cms.gov
- NAIC (National Association of Insurance Commissioners): naic.org
- KFF Medicare Research: kff.org/medicare
- Social Security Administration: ssa.gov
Content last reviewed August 2026. If you notice any outdated information, please contact us.