2025 CPT code 70120

Radiologic examination, mastoids; less than 3 views per side.

Code 70120 is unilateral and represents fewer than three views per side. For bilateral examinations, modifier 50 may be appended, or the code may be reported twice with modifier 50 appended to the second instance, depending on payer preference.

Modifiers such as 26 (Professional Component), TC (Technical Component), 50 (Bilateral Procedure), 76 (Repeat Procedure by Same Physician), and 77 (Repeat Procedure by Another Physician) may be applicable based on the specific circumstances of the service provided. Modifier RT or LT can indicate the side, right or left.

Medical necessity must be established for this procedure. The documentation must support the clinical rationale for the X-ray, demonstrating its relevance to the patient's symptoms and the need to evaluate a specific condition.

The physician orders the procedure, interprets the images, and uses the findings to diagnose and manage the patient's condition. The radiology technician positions the patient and operates the X-ray equipment.

In simple words: This is a simple X-ray of the bones behind your ear. The doctor takes a few pictures to check for infections, problems with balance, or lumps.

This code represents a limited radiographic examination of the mastoid bones, including fewer than three views per side. It is used to diagnose mastoiditis, vestibular system disorders, or masses in the head or neck.

Example 1: A patient presents with ear pain, swelling, and fever, raising suspicion of mastoiditis. A limited mastoid X-ray (70120) is ordered to confirm the diagnosis., A patient experiences vertigo and dizziness. A limited mastoid X-ray (70120) is ordered as part of the evaluation for vestibular system disorders., A patient has a palpable lump behind the ear. A limited mastoid X-ray (70120) is ordered to assess the nature of the mass and rule out bony involvement.

The medical record should document the reason for the X-ray, the number of views taken, the patient's symptoms, and the interpretation of the images by the radiologist.

  • Modifier TC rule: Modifier TC is applicable when billing for only the technical component of the procedure.
  • Specialties:Radiology, Otolaryngology, Emergency Medicine
  • Place of Service:Office, Hospital, Outpatient Facility, Emergency Room
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