Otolaryngology Coding Alert

Anatomy Refresher:

Do You Know Where Your Sinuses Are?

Learn skull structure to remember which is which. 

The paranasal sinuses are located within the skull bone surrounding the nose. These four pairs of cavities (air-filled spaces) are named for the bones that contain them. 

  • Frontal – Over the eyes in the eyebrow area 
  • Maxillary – Inside each cheekbone 
  • Ethmoid – Just behind the bridge of the nose, between the eyes 
  • Sphenoid – Behind the ethmoids in the upper region of the nose, behind the eyes.

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