70450 CPT Code: CT Head Without Contrast Billing

Last Updated: January 17, 2026

Medical Coding Assistant

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CPT 70450 (Computed tomography, head or brain; without contrast material) is one of the most frequently billed imaging codes in emergency medicine and neurology.

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With vs Without Contrast

It is critical to select the correct CT code based on contrast usage:

  • 70450: Without contrast.
  • 70460: With contrast.
  • 70470: Without contrast, followed by contrast and further sections.

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Medical Necessity & Trauma

70450 is the gold standard for ruling out intracranial hemorrhage following head trauma. Ensure your ICD-10 codes match the symptoms, such as S06.0X0A (Concussion without loss of consciousness, initial encounter) or R51.9 (Headache, unspecified).

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NCCI Edits

If you bill a CTA (CT Angiography) of the head (70496), the standard CT head (70450) is typically bundled into it unless performed at entirely separate, medically necessary encounters.

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