What Medicare Pays vs. What You Might Be Charged

Category	Amount
Medicare Allowed Rate What Medicare approves for this service	$248.32
Typical Billed Amount What providers commonly charge	$500 – $3000
Potential Markup How much more you might pay vs. Medicare rate	1108% above Medicare

Why the difference? Providers set their own prices. Without insurance, you may be billed the full amount. Even with insurance, your co-pay is often based on the provider's charge — not the Medicare rate.

What CPT Code 72148 Means

When you see CPT code 72148 on your medical bill, it means you received an MRI (magnetic resonance imaging) scan of your lumbar spine - that's your lower back area. This specific code is for MRI scans done without contrast, which means no special dye was injected into your body during the procedure.

Doctors typically order this test when you're experiencing lower back pain, leg pain, numbness, or weakness that might be caused by problems with your spine, discs, or nerves. The MRI creates detailed pictures that help your doctor see what's happening inside your lower back without surgery or other invasive procedures.

This is one of the most common types of MRI scans ordered, especially for patients dealing with chronic back pain or suspected disc problems. The scan usually takes 30-60 minutes and doesn't involve any radiation.

What to Expect on Your Bill

The cost for CPT code 72148 can vary significantly depending on where you have the MRI done. You can expect to see charges ranging from $500 to $3,000, with hospital-based imaging centers typically charging more than independent facilities. The Medicare reimbursement rate for this procedure is $248.32, which gives you an idea of what the government considers a reasonable cost.

On your bill or explanation of benefits, you'll see this listed as "MRI lumbar spine without contrast" or something similar, along with the CPT code 72148. If you have insurance, you'll typically see the original charge, any negotiated discounts your insurance company received, and then your portion (copay, coinsurance, or deductible).

Keep in mind that you might receive separate bills for the MRI scan itself and for the radiologist who reads and interprets your images. The radiologist's fee is usually much smaller than the imaging fee.

How to Verify Your Charges Are Correct

First, make sure the CPT code matches the procedure you actually received. CPT 72148 is specifically for lower back MRI without contrast. If you received contrast dye (an injection during the scan), the code should be 72149 instead. If your MRI covered both your lower and middle back, you might see code 72158.

Compare the charges to typical ranges in your area - anything significantly above $3,000 warrants a closer look. You can call other imaging centers in your area to ask about their cash prices for comparison. If you think you've been overcharged, start by calling the billing department to ask for an itemized bill and explanation of charges.

If you're still concerned about the charges, consider asking for a payment plan or financial assistance if the provider is a hospital or large healthcare system. Many facilities have programs to help patients with high medical bills, especially if you're uninsured or underinsured.

Codes Often Confused With CPT 72148

CPT 72149 CPT 72158

Frequently Asked Questions

How much does a lower back MRI cost without insurance?

Without insurance, you can expect to pay between $500 and $3,000 for a lower back MRI (CPT 72148). The wide range depends on where you have it done - independent imaging centers are typically less expensive than hospital-based facilities.

What's the difference between CPT 72148 and 72149?

CPT 72148 is for lower back MRI without contrast dye, while CPT 72149 is for the same scan with contrast. If you received an injection during your MRI, you should be billed for 72149, not 72148.

Why is my MRI bill so expensive compared to what Medicare pays?

Medicare pays $248.32 for this procedure, but hospitals and imaging centers often charge much more to uninsured patients or as starting points for insurance negotiations. You can ask about cash discounts or payment plans to reduce your out-of-pocket costs.