CPT® Code 30920

The procedure described by CPT® Code 30920 involves the ligation of the internal maxillary artery through a transantral approach. This surgical intervention is primarily indicated for the management of severe epistaxis, or nosebleeds, that are unresponsive to conservative treatment methods. The internal maxillary artery is a significant vessel that supplies blood to the nasal cavity, and its ligation can effectively reduce or stop excessive bleeding. The transantral approach allows the surgeon to access the internal maxillary artery by making an incision in the buccal mucosa, which is the inner lining of the cheek. This method is particularly useful when other techniques for controlling nasal bleeding have failed, providing a direct route to the artery that can be ligated to achieve hemostasis. The procedure requires careful dissection and identification of anatomical structures to ensure that the correct artery is targeted while minimizing damage to surrounding tissues.