Is a CT scan of the head without contrast painful?

No, a CT scan itself is not painful. You'll lie still on a table that slides into the CT machine. The machine makes some noise, but you won't feel anything during the scan. Since no contrast dye is used, you won't experience any injection discomfort either.

Will my insurance cover CPT code 70450?

Most insurance plans typically cover medically necessary CT scans of the head. However, coverage depends on your specific plan's benefits, your deductible, and any co-pays or co-insurance you might have. It's always best to check with your insurance provider directly to understand your coverage.

What's the difference between a CT of the head with and without contrast?

The main difference is the use of a special dye. A CT without contrast (70450) doesn't use the dye, which is good for seeing things like fresh blood or bone fractures. A CT with contrast uses a dye injected into your vein, which helps highlight blood vessels, tumors, or infections more clearly.

Why is the cost so different for the same CT scan at different places?

Costs can vary due to several factors. Hospitals often charge higher 'facility fees' than outpatient imaging centers. Your insurance network status also plays a big role; out-of-network providers usually cost more. Geographic location and the specific agreements between providers and insurers also influence pricing.

Can I get a separate bill from the radiologist for CPT 70450?

For CPT code 70450, the charge typically includes both the technical scan and the radiologist's interpretation. You usually won't receive a separate bill from the radiologist for this specific code. If you do, it's worth questioning to ensure you're not being double-billed for the same service.

Billing Code Explained

What is CPT code 70450 on my medical bill?

CPT code 70450 on your medical bill means you received a CT scan of your head. This scan was done without using a special contrast dye. It helps doctors see detailed images of your brain, skull, and other structures inside your head.

By the ExplainMyBill.ai Editorial Team · Reviewed by our billing research team

Published June 5, 2026 · Updated June 5, 2026

What CPT Code 70450 Means

CPT code 70450 refers to a computed tomography (CT) scan of your head. A CT scan is like a very advanced X-ray that takes many pictures from different angles. These pictures are then combined by a computer to create detailed cross-sectional images of your head.

The important part of this code is 'without contrast.' This means no special dye was injected into your bloodstream before or during the scan. Doctors use this type of scan to look for things like bleeding, fractures, or certain types of swelling in your brain or skull.

Why You Might See This Code on Your Bill

You'll typically see CPT code 70450 on your bill after you've had a CT scan of your head. This could happen for several reasons:

Often, this scan is done in an emergency room to check for head injuries, strokes, or severe headaches. Your doctor might also order it if you have unexplained dizziness, seizures, or other neurological symptoms. It helps them get a clear picture of what's happening inside your head without needing more invasive procedures right away.

What's Included or Bundled in This Charge

When you see CPT code 70450, it generally covers a few key things:

This code includes the technical part of the scan, which is the use of the CT machine and the staff who operate it. It also covers the professional part, which is when a radiologist (a doctor specializing in imaging) reviews and interprets the images. They write a report explaining their findings to your treating doctor. You typically won't see separate charges for the machine use and the radiologist's interpretation under this single code.

How Costs Can Vary for a Head CT

The cost for a head CT scan can differ quite a bit. Here's why:

Your insurance plan plays a big role. If the facility where you got the scan is 'in-network,' your costs will usually be lower than if it's 'out-of-network.' Out-of-network providers may not have agreed-upon rates with your insurer, leading to higher out-of-pocket expenses. The type of facility also matters; a CT scan at a hospital emergency room often costs more than the same scan done at an outpatient imaging center. This is due to 'facility fees' that hospitals charge to cover their overhead. Finally, prices can vary based on where you live, even for the same service.

Common Billing Errors to Watch For

Medical bills can be confusing, and mistakes can happen. Here are some things to double-check with CPT code 70450:

Make sure you weren't billed for a CT scan with contrast (code 70460 or 70470) if you definitely did not receive the dye. Sometimes, a duplicate charge might appear if the scan was initially ordered and then re-ordered for some reason. Also, verify that your insurance company approved the scan if it wasn't an emergency. If pre-authorization was needed and not obtained, your plan might deny coverage, leaving you with the full bill.

What to Do if the Charge Seems Wrong

If you think there's an error with CPT code 70450 on your bill, don't hesitate to act:

First, contact the billing department of the facility or doctor's office that provided the service. Ask them to explain the charge in detail and review your medical records to confirm the service received. If they can't resolve it, or if you still have concerns, contact your insurance company. They can help you understand your benefits and investigate the claim. Keep detailed notes of your calls, including dates, names, and what was discussed.

Frequently asked questions

Is a CT scan of the head without contrast painful?: No, a CT scan itself is not painful. You'll lie still on a table that slides into the CT machine. The machine makes some noise, but you won't feel anything during the scan. Since no contrast dye is used, you won't experience any injection discomfort either.
Will my insurance cover CPT code 70450?: Most insurance plans typically cover medically necessary CT scans of the head. However, coverage depends on your specific plan's benefits, your deductible, and any co-pays or co-insurance you might have. It's always best to check with your insurance provider directly to understand your coverage.
What's the difference between a CT of the head with and without contrast?: The main difference is the use of a special dye. A CT without contrast (70450) doesn't use the dye, which is good for seeing things like fresh blood or bone fractures. A CT with contrast uses a dye injected into your vein, which helps highlight blood vessels, tumors, or infections more clearly.
Why is the cost so different for the same CT scan at different places?: Costs can vary due to several factors. Hospitals often charge higher 'facility fees' than outpatient imaging centers. Your insurance network status also plays a big role; out-of-network providers usually cost more. Geographic location and the specific agreements between providers and insurers also influence pricing.
Can I get a separate bill from the radiologist for CPT 70450?: For CPT code 70450, the charge typically includes both the technical scan and the radiologist's interpretation. You usually won't receive a separate bill from the radiologist for this specific code. If you do, it's worth questioning to ensure you're not being double-billed for the same service.

This article is educational information, not medical, legal, or financial advice. Billing rules change and individual situations vary — always confirm details with your provider or insurer.