Why did Medicare deny my lab work?

Asked by: Brad Schmeler Sr.  |  Last update: July 3, 2025
Score: 4.3/5 (6 votes)

It's important to know that Medicare won't cover any blood test if it isn't medically necessary. If you seek a blood test on your own, it's unlikely you'll get it covered. Tests not covered may include those for employment purposes, wellness screenings, or routine monitoring without medical necessity.

Why would Medicare deny blood work?

Medicare fully covers only medically necessary blood work. This means a doctor orders the test because they are trying to make a diagnosis. Routine blood work (such as a cholesterol check at an annual physical) is not covered.

How do I get my labs covered by Medicare?

Part B (Medical Insurance)

covers medically necessary clinical diagnostic laboratory tests, when your doctor or provider orders them. These tests may include certain blood tests, urinalysis, certain tests on tissue specimens, and some screening tests.

Why are my labs not covered by insurance?

Sometimes the doctors order other testing that are not for preventive care and this is what causes the non-coverage because the labs bill with incorrect diagnosis codes. You need to call the lab and see the reason why the services were not covered, ask specifically if the labs were billed using the screening diagnosis.

Does Medicare cover blood work at LabCorp?

Labcorp will file claims directly to Medicare, Medicaid, and many insurance companies and managed care plans. Before you have lab tests performed, please make sure: Your insurance information is up to date. Labcorp is a contracted laboratory for your insurance company.

I don’t go to the Doctor. I BUY my own Blood Tests: Here's why

21 related questions found

Is routine bloodwork covered by Medicare?

Staying on top of your health involves routine blood tests. These preventative tests play an important role in monitoring your wellbeing and helping to detect early signs of health issues. Blood tests are covered by Medicare if they are deemed medically necessary.

Can Labcorp refuse service?

Will Labcorp refuse service if I have an outstanding balance? Labcorp reserves the right to refuse service if you have a past due balance.

How do I know if my blood work is covered by insurance?

Always check with your insurance provider for detailed information about your specific coverage. If you're unsure, you can also ask your doctor or the lab to check your insurance coverage for you before you get the blood work done.

What labs are considered preventive?

Preventive Care
  • Blood pressure, diabetes, and cholesterol tests.
  • Many cancer screenings, including mammograms and colonoscopies.
  • Counseling on such topics as quitting smoking, losing weight, eating healthfully, treating depression, and reducing alcohol use.
  • Regular well-baby and well-child visits.

How much does blood work cost without insurance?

Without insurance, you can typically expect to pay between $29 and $99 per test or panel for common types of blood work. You may be able to save money on blood work by looking into financial assistance programs, payment plans, and discounts.

What are the 6 things Medicare doesn't cover?

Some of the items and services Medicare doesn't cover include:
  • Eye exams (for prescription eyeglasses)
  • Long-term care.
  • Cosmetic surgery.
  • Massage therapy.
  • Routine physical exams.
  • Hearing aids and exams for fitting them.

Are labs included in a Medicare annual wellness visit?

No. The IPPE and AWV don't include clinical lab tests, but you may make appropriate referrals for these tests as part of the IPPE or AWV. Does the deductible, coinsurance, or copayment apply for the IPPE? No.

Why do blood tests get rejected?

Clotted specimen, hemolysis, insufficient volume, and labelling errors were the major cause of blood specimen rejection. Proper training for specimen collectors and compliance with good laboratory practices are required to reduce the rejection rate.

Does Medicare cover lipid panel blood tests?

For patients who have a known condition (not a screening) that requires checking of total cholesterol, LDL, HDL or triglycerides, Medicare covers a Lipid Panel lab test once every 12 months.

Why are doctors refusing Medicare?

In recent years, physician groups and some policymakers have raised concerns that physicians would opt out of Medicare due to reductions in Medicare payments for many Part B services, potentially leading to a shortage of physicians willing to treat people with Medicare.

What lab tests are considered routine?

For most adults, depending on age, doctors will recommend a screening schedule that includes regular physical exams, body mass index (BMI), skin checks, cholesterol and blood pressure screening, eye exams, immunizations and screening for sexually transmitted diseases.

Is an A1C test considered preventive?

The A1C test is diagnostic. Whether your visit is preventive or diagnostic can have a big affect on how much you pay.

Are labs covered under annual physical?

Most insurers cover an annual physical exam done once a year without copay. However, the coverage may exclude associated costs such as lab analysis. In other instances, the insurer may require you to pay a portion of specific recommended tests and services.

What diagnosis covers a CBC for Medicare?

Specific indications for CBC with differential count related to the WBC include signs, symptoms, test results, illness, or disease associated with leukemia, infections or inflammatory processes, suspected bone marrow failure or bone marrow infiltrate, suspected myeloproliferative, myelodysplastic or lymphoproliferative ...

Is blood work included in a wellness check?

Although there are no definite rules about which laboratory tests should be included in an annual wellness exam, most doctors prescribe routine tests for better insight into an individual's medical condition. These tests may include urinalysis, complete blood count and picture, and chemistry panel.

Does Medicare cover vitamin D testing?

Vitamin D testing may not be used for a routine screening. However, Medicare Part B (medical insurance) covers clinical laboratory tests, including blood work, if considered medically necessary and ordered by your provider. This may include a vitamin D screening if you meet certain conditions.

What is the controversy with Labcorp?

From March 2012 to November 2023, Labcorp and UHS, which operates the University of Tennessee Medical Center, allegedly delayed submitting physician orders for Caris testing. By holding or resubmitting orders until 14 days after discharge, they circumvented CMS's rule to bill Medicare directly.

Why would Labcorp withhold results?

The most common reason for delay in receiving results is inaccurate or out-of-date personal information on record with your health care providers or in your Labcorp Patient™​ portal personal profile.

Can I just go to Labcorp for blood work?

Are appointments required? Appointments are not required but may help reduce your patient's wait time. Our locations are generally busiest from opening until 10:00 AM. If withholding food and/or beverages prior to the test is not required, you may wish to schedule an appointment during off-peak hours.