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Does Medicare Cover Blood Tests?

Does Medicare Cover Blood Tests? 

Yes, Medicare does cover blood tests, so long as a doctor who accepts Medicare assignment determines one as medically necessary. Physicians often order diagnostic tests for patients with concerning health symptoms, giving them the information required to develop a treatment plan for any underlying disease or condition. Medicare will even cover routine preventative blood panels used to monitor and paint a picture of your general health.

Some of the most common reasons Medicare may approve a blood test include: 

  • Diagnosis or treatment of a medical condition.
  • Monitoring treatment progress.
  • Screening for specific conditions or risks.
  • Preoperative testing.
  • Routine preventative care.

You must receive bloodwork from a Medicare-certified laboratory for coverage eligibility. Medicare Part B fully covers medically necessary diagnostic labs like blood tests, urinalysis, and tissue sampling at no extra charge to patients, given the procedures fall within their allotted benefit window.

What Are Blood Tests? 

Blood tests are widespread and generally simple procedures doctors utilize to understand your bodily makeup and look for early warning signs of disease. These screenings can also reveal the effectiveness of recently performed procedures and active medication regimens, allowing healthcare providers to recreate and adjust their treatment plans accordingly.

Doctors may prescribe various tests to procure all sorts of information, ranging from details about your complete blood count (CBC), your organs’ chemicals, heart attack enzymes, cholesterol levels, bone marrow quality, and your body’s ability to clot blood. This birdseye perspective of your inner functions helps doctors identify red flags and monitor areas of future concern, ultimately preserving your overall health.  

Understanding Medicare Coverage For Blood Testing 

Medicare blood test coverage will vary depending on your medical eligibility and the benefits you have enrolled in.


To qualify for a Medicare-covered blood test, a doctor must prescribe one as a medical necessity to gather information about your general health or diagnose a condition, allowing for informed treatment decisions. You must also see a medical provider who accepts Medicare assignment and visit a Medicare-certified laboratory to receive the total extent of available coverage.

Medicare will only cover a set amount of blood screening per benefit period, depending on what your doctors need to monitor. For example, beneficiaries may receive one covered blood test for HIV per year but only qualify for heart disease panels once every five years. Eligibility for screenings exceeding these limits will change depending on your situation.

Part A Coverage 

Medicare Part A (Hospital Insurance) covers the everyday cost of inpatient hospital stays, residencies in skilled nursing facilities, hospice care, eligible home healthcare, and on-site lab tests and surgeries. If your physician orders bloodwork while you are still registered as an inpatient beneficiary at a qualified health center, Part A will cover it in full.

Eligible patients must meet their $1600 Part A deductible before Medicare benefits kick in. Coverage begins the day you check into the hospital and can reset if you leave and reregister later in the year. Though initial screenings would cost nothing, services received after 60 consecutive days in the hospital require significant out-of-pocket copayment contributions.

Part B Coverage 

Medicare Part B (Medical Insurance) pays for outpatient doctors’ services, durable medical equipment, clinical research, mental health care, and preventative tests. Part B will fully cover bloodwork ordered by a physician as medically necessary in preventing or diagnosing an underlying health issue. Since they typically occur in outpatient laboratories, most screenings see coverage through Part B.

Medicare Part B covers 100% of diagnostic laboratory tests like blood and urinalysis, given they occur within their Medicare-approved benefit period. Procedures exceeding these limits may incur additional costs, so check with your Medicare agent and healthcare provider before scheduling the service.

Medigap Coverage 

Private companies sell Medicare Supplement, or Medigap, benefits to help pay for out-of-pocket costs not covered by Original Medicare. Medigap can help pay some or all of your Part A or Part B deductible and any coinsurance you may incur for blood tests that do not qualify for total coverage.

How Does Medicare Advantage Cover Blood Testing? 

Medicare Advantage, or Medicare Part C, plans must legally provide equal or greater benefits to Original Medicare. Therefore, Medicare Advantage covers any preventative and diagnostic blood tests prescribed by a doctor as medically necessary. Some MA plans will even cover additional types of bloodwork and set more relaxed eligibility requirements.

The private companies that sell and structure these plans do not have to abide by Original Medicare bylaws, meaning benefits, costs, and restrictions vary from policy to policy. While Medicare Advantage can offer more extensive coverage, plans often limit eligible services to a network of pre-approved doctors and hospitals. Likewise, patient cost-sharing responsibilities through coinsurance, copays, and deductibles may differ notably from Original Medicare. 

How Much Does Blood Testing Cost With Medicare? 

Without insurance, blood screenings can cost anywhere from $50 to $1000 or more, depending on the type of test received, your geographic location, and the laboratory used. Medicare will cover most or all of these expenses as long as a doctor prescribes the procedure as a medical necessity and enough time has elapsed since your last identical test.

Even if you qualify for full Medicare benefits, you will likely still have to pay your deductible. Blood screenings that supersede your yearly allotment may still receive Medicare coverage but at some additional out-of-pocket costs. To avoid unexpected bills, ensure you know how Medicare covers your prescribed bloodwork before going in for care.

Part A Costs 

Though qualified tests typically see full coverage under Medicare Part A, beneficiaries must still pay their deductible. In 2023, hospital patients must pay a $1600 deductible before Medicare coverage takes over for the remainder of each benefit period. Benefit periods start the day you enter the hospital and end 60 consecutive days following your discharge.  

Returning to the hospital for bloodwork months later would trigger a new benefit period that requires another deductible. For those rare cases in which patients must remain in the hospital for over two months, Medicare will begin charging a significant daily copayment. Eventually, inpatient residents who overstay their benefit period must pay for all hospital services out-of-pocket.

Part B Costs 

Similarly to Part A, Medicare Part B will fully cover any medically necessary outpatient bloodwork a doctor prescribes. These tests must not exceed Medicare’s allotted limits for each specific diagnostic and screening test. Eligible patients will still have to meet their annual Part B deductible of $226 before gaining access to benefits.

Unlike Part A, which often does not charge a premium, Medicare beneficiaries must pay $165 monthly to maintain Part B coverage. Notably, specific blood tests outside traditional diagnostic or preventative parameters or repeat tests exceeding Medicare limits may still qualify for coverage. However, these exceptional cases will require patients to pay a 20% coinsurance with every service.

Medicare Advantage Costs 

Medicare Advantage costs vary widely depending on your policy type and chosen insurer. Though all MA policies cover everything traditionally covered under Original Medicare, the private entities that oversee these plans set independent cost-sharing requirements, often resulting in unpredictable premium, copayment, and deductible rates.

Most Medicare Advantage policies require beneficiaries to see doctors within a limited medical network. Receiving care anywhere else could result in higher copays or denied coverage. However, most of these plans feature preset out-of-pocket maximums (OOPs), limiting the amount a patient must pay annually before their policy covers 100% of all eligible services.

Where Can You Receive Blood Tests? 

You can receive Medicare-covered blood tests at any hospital, doctor’s office, independent lab, or nursing facility that accepts Medicare assignment. Accepting assignment simply means agreeing to the Medicare-approved amount as full payment for a covered service. Notably, most doctors and health centers nationwide comply with Medicare standards.

However, coverage can become more complicated at large testing companies like Quest or LabCorp, which require doctors to prove medical necessity by assigning specific “diagnostic codes” to each blood panel. Furthermore, eligibility for these independent services varies from state to state. Private labs can even require Advance Beneficiary Notices of Noncoverage, legal documents stating a patient’s responsibility to cover all costs following a Medicare payment denial.

Which Blood Tests Does Medicare Cover? 

Medicare will cover most bloodwork, including basic metabolic screenings that check plasma for information about your organs and muscles, enzyme tests that determine blood pressure and heart attack risks, and lipoprotein panels that identify cholesterol levels and heart disease. Examples of specific conditions that require blood screenings and their Medicare-covered limits include:

  • Diabetes:  A1C tests to check blood sugar levels once per year or twice for high-risk patients.
  • Heart disease: Cholesterol, triglyceride, and lipid analysis qualify once every five years.
  • HIV: Once per year.
  • STDs: Once per year.
  • Prostate cancer: Prostate-specific antigen tests qualify once per year.
  • Hepatitis A and B: Once per year, depending on risk.
  • Colorectal cancer: Once per year

Other Lab Tests Medicare Covers 

Medicare Part B fully covers many other diagnostic and preventive labs. Examples of non-blood-related tests, what they check for, and the frequency in which you can receive them include:

  • Mammograms:  Once a year for breast cancer
  • Pap smears: Once a year for cervical cancer
  • Colonoscopies: Every 24-120 months based on your risk of colon cancer
  • Bone density tests:  Every 24 months to check for osteoporosis
  • Abdominal ultrasounds:  Once per lifetime to check for aortic aneurysms
  • Low-dose computed tomography:  Once per year to check for lung cancer in eligible patients
  • Stool DNA samples: Once every 48 months for colon cancer

Medicare will also routinely cover urinalysis, given that doctors prescribe it as medically necessary to assess your general health.

What If You Need Blood Testing More Often? 

Occasionally, people develop specific ailments or experience symptoms requiring doctors to prescribe diagnostic bloodwork more frequently than conventionally covered by Medicare. Most times, though no longer eligible for total benefits, repeat panels will at least see 80% coverage through Medicare Part B.  

To take advantage of these extended services, Original Medicare beneficiaries with high-maintenance conditions can enroll in Medigap plans that fully absorb their coinsurance or shop for Medicare Advantage policies with more favorable cost-sharing and diagnostic benefits. Patients can even coordinate benefits with an outside insurer to bolster their Medicare coverage and reduce out-of-pocket expenses.

Putting It All Together 

Blood tests help physicians learn more about their patients’ general health and can reveal underlying medical issues like cancer, diabetes, and heart disease. Medicare fully covers all medically necessary bloodwork prescribed by a doctor, as long as they accept Medicare assignment and repeat tests occur within ample distance of each other.

Medicare will still partially cover laboratory services that exceed conventional standards, though at some additional cost to the patient. To avoid this, talk to your doctors about the specific bloodwork you require and ask a Medicare agent about your coverage limits. Lastly, consider supplementary benefits like Medigap, which could help reduce or even eliminate related out-of-pocket expenses.


Yes, as long as the participating doctor accepts Medicare assignment and prescribes the blood test as medically necessary. Online telehealth support skyrocketed during the COVID-19 pandemic and remains prevalent due to its convenience for doctors and patients. For now, the DHS allows broad Medicare coverage for telehealth services, meaning that benefits tend to apply just as they would for in-person visits.

It depends. Homebound individuals who qualify for Medicare-covered home health care can receive these tests from Medicare-certified nurses for delivery to compliant laboratories. However, Original Medicare may require mobile patients to visit labs or hospitals in person. Medicare Advantage may provide wider-reaching benefits for home-collection tests, though finer coverage details ultimately depend on your chosen policy.

Yes, if you or your doctor believe that a denied blood test should qualify for coverage, you can appeal the decision by filling out a Redetermination Request Form and sending it to the company that handles claims for Medicare. You can find this information on your quarterly Medicare Summary Notice. Typically, the Medicare Administrative Contractor will reassess your case within 60 days.

Sometimes, your PCP may not have the resources or training to fully address or diagnose conditions that require specialized care, such as services from oncologists or cardiologists. Generally, if a Medicare-approved specialist orders medically necessary bloodwork, it will still qualify for Original Medicare coverage.

However, if you have Medicare Advantage, a visit to a specialist may require an official referral. Services received from out-of-network specialists can also increase your out-of-pocket costs.

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