What is the CPT Code for a CT Scan of the Brain Without Contrast?

In medical billing and coding, accuracy is the foundation of proper reimbursement. One of the most common diagnostic procedures is a CT scan of the brain without contrast, often performed to investigate trauma, neurological symptoms, or suspected strokes. Knowing the correct CPT code helps practices avoid denials, streamline claims, and stay compliant.

The Correct CPT Code

The CPT code for a CT scan of the brain without contrast is 70450.
This code identifies a computed tomography (CT) scan of the head performed without contrast material. Physicians typically order this type of imaging for conditions such as:

• Head trauma
• Severe headaches or migraines
• Seizures or dizziness
• Suspected stroke or intracranial bleeding
• Neurological changes requiring urgent evaluation

Because of its frequent use in emergency and outpatient settings, CPT 70450 is one of the most commonly billed radiology codes.

Why Correct Coding Matters

Even a small coding mistake can delay payments, trigger denials, or result in compliance risks. For radiology practices, understanding and applying CPT codes correctly is vital. Our detailed guide on understanding radiology billing codes explains why precision in coding directly impacts financial health.

Radiology Billing and Compliance

Submitting accurate claims requires not just the right CPT code, but also thorough documentation, payer-specific guidelines, and compliance checks. Partnering with billing specialists who focus on radiology billing ensures providers capture the correct reimbursements while reducing the risk of audits and denials.

Choosing the Correct CPT Code

Radiology can get complex when providers perform scans with and without contrast in the same session, or when additional studies are ordered. To help avoid confusion, our resource on how to choose the correct CPT code for a radiology procedure outlines key decision-making factors, including payer rules and documentation requirements.

For the most up-to-date and official CPT coding references, professionals should use the AMA CPT® Code Lookup Tool. This resource is widely regarded as the gold standard in medical coding.

Final Thoughts

The CPT code 70450 is the standard for a CT scan of the brain without contrast, and using it correctly ensures smooth billing and timely reimbursement. For radiology practices, coding accuracy isn’t just about numbers it’s about keeping operations efficient and compliant. By staying informed and leveraging expert billing support, providers can reduce errors, maximize revenue, and focus more on patient care.