Medicare generally doesn't cover routine wellness blood panels, employment-related tests, self-requested tests without a doctor's order, or most extensive genetic/functional medicine panels, focusing instead on medically necessary diagnostic tests ordered by a doctor for specific conditions or approved preventive screenings like certain cancer or cardiovascular tests, meaning tests not tied to a diagnosis or a set preventive schedule often incur out-of-pocket costs.
Medicare covers blood work and lab tests as long as they're medically necessary to diagnose or monitor a health condition. Medicare won't cover routine blood work at an annual physical, but you may be eligible for regular screenings for specific conditions.
Some pathology tests don't qualify for a Medicare benefit and the patient must pay the full fee. Examples include elective cosmetic surgery, insurance testing and some genetic tests.
However, Medicare doesn't typically cover routine bloodwork during an annual physical unless it's deemed medically necessary to diagnose or monitor a specific condition. This means that “wellness” blood panels requested without symptoms or risk factors may not qualify for coverage.
You have the right to appeal any decision regarding your Medicare services. If Medicare does not pay for an item or service, or you do not receive an item or service you think you should, you can appeal. Ask your doctor or provider for a letter of support or related medical records that might help strengthen your case.
Here are some of the biggest Medicare mistakes to avoid:
Drugs that promote fertility (i.e., Clomid, Gonal-f, Ovidrel®, Follistim®, etc.) Drugs for cosmetic purposes or hair growth (i.e., Propecia®, Renova®, Vaniqa®, etc.) Drugs for the relief of cough and cold symptoms (i.e., Phenergan w/Codeine, Robitussin® AC, Tanafed, Tessalon® Perle, etc.)
People leave Medicare Advantage (MA) plans due to difficulty accessing needed care (especially with worsening health), restrictive provider networks, complex prior authorization rules, and dissatisfaction with care quality, often feeling trapped as their health needs grow despite initial low costs and extra perks that become limiting. Issues with provider availability, network changes, and sometimes misleading marketing also drive disenrollment, pushing people back to Traditional Medicare for greater freedom, notes KFF.
Key takeaways:
Original Medicare and Medicare Advantage both cover medically necessary MRIs. But the scans must meet a few requirements. Medicare Part B will cover 80% of the Medicare-approved amount for an authorized MRI. But you will need to pay your annual deductible before Medicare pays its part of the scan.
Medicare generally does not cover routine, wellness, or self-requested blood tests without clear medical necessity, such as tests for employment, most genetic panels, or extensive vitamin/micronutrient panels, but it does cover medically necessary lab work ordered by a doctor to diagnose, treat, or prevent a specific condition, including certain screenings. Key non-covered areas include routine bloodwork during Annual Wellness Visits, tests for third parties, and extensive "wellness panels," with coverage hinging on your doctor documenting a specific medical reason.
Part B covers up to 2 blood glucose (blood sugar) laboratory test screenings each year if your doctor determines you're at risk for developing diabetes. These screenings may be fasting or non-fasting glucose tests, A1C tests, or other glucose tests approved by Medicare as appropriate.
The extra $144 added to Social Security usually comes from the Medicare Part B Giveback benefit, offered by some Medicare Advantage (Part C) plans, which pays back some or all your Part B premium, showing up as extra money in your check if it's deducted from your Social Security. To qualify, you need Original Medicare (Parts A & B), pay your own Part B premium, live in a plan's service area, and enroll in a specific Medicare Advantage plan that offers this "rebate," with the amount varying by plan and location.
The Medicare "3-Day Rule" requires a beneficiary to have a qualifying 3-day inpatient hospital stay (admission day counts, discharge day doesn't) before Medicare will cover services in a Skilled Nursing Facility (SNF) for rehabilitation or skilled care, though this rule can be waived in certain Medicare Advantage plans or through specific Accountable Care Organization (ACO) initiatives. Time spent in observation or the Emergency Department doesn't count towards these 3 days, but new demonstration projects and waivers are emerging to offer more flexibility for patients needing SNF care.
Vermont, Utah and Minnesota topped the Commonwealth Fund's Medicare performance scorecard in 2025, whereas Kentucky, Mississippi and Louisiana struggled the most.
The five-word test for dementia is a quick screening tool where a person remembers five simple, unrelated words, recalls them immediately, then recalls them again after a short distraction (like a few minutes of conversation or simple math) to assess short-term memory, often used to spot early signs of cognitive decline like in Alzheimer's. It checks the ability to learn, store, and retrieve new information, with poor delayed recall suggesting the need for further medical evaluation for mild cognitive impairment or dementia.
A wellness exam typically includes blood work like a Complete Blood Count (CBC), Comprehensive Metabolic Panel (CMP) for organ function and electrolytes, and a Lipid Panel (cholesterol) to assess heart health, along with blood sugar (glucose/A1C) and thyroid tests (TSH), plus a urinalysis, checking for anemia, kidney/liver issues, diabetes, and thyroid problems. Additional screenings (like Vitamin D, iron) and non-lab tests (blood pressure, weight, EKG) are also common, tailored to your age, sex, and health history.
When did Medicare stop paying for annual physicals? Since the introduction of Medicare in 1965, Medicare Part B has never paid for annual physical exams. In fact, it wasn't until 2011 that Medicare expanded their preventive services to include the AWV for all beneficiaries.