CPT® Code 67420

The procedure described by CPT® Code 67420 involves an orbitotomy, which is a surgical intervention performed to access the orbit, the bony cavity that contains the eye. This specific approach is lateral, meaning that the incision is made on the side of the eye, allowing for direct access to the orbital contents. The procedure includes the creation of a bone flap or window, which is a section of bone that is temporarily removed to facilitate the exploration and treatment of the orbit. During this surgery, definitive actions such as the removal of a lesion or foreign body are performed. The common language description highlights the meticulous steps involved, starting with a lazy-S incision in the upper eyelid crease, which is designed to minimize visible scarring. The lateral rectus muscle, one of the extraocular muscles, is exposed and retracted to provide a clear view of the underlying structures. The surgical team dissects through the soft tissues to expose the zygomatic bone, which is part of the facial skeleton. The periosteum, a dense layer of connective tissue covering the bone, is incised to allow access to the hard cortical bone of the zygoma. Holes are drilled into the bone, which are then connected using an oscillating saw to create a bone window or flap. This technique is crucial for gaining access to the orbit without causing excessive damage to surrounding tissues. Once the periorbita, the fibrous tissue surrounding the orbit, is incised, the surgeon carefully dissects the underlying fat and soft tissue attachments to fully expose the orbit. In the context of CPT® Code 67420, the primary focus is on the removal of a lesion, which can be either cystic or solid and may involve soft tissue and/or bony structures. The lesion is meticulously dissected free from surrounding tissues, ensuring that all abnormal tissue is removed along with a margin of normal tissue to minimize the risk of recurrence. The excised lesion is then sent for pathology evaluation to determine its nature. The procedure may also involve the removal of foreign bodies, as indicated by CPT® Code 67430, where the foreign object is either grasped with forceps or carefully dissected from surrounding tissues. After the lesion or foreign body is removed, the surgical site is flushed with sterile saline or an antibiotic solution as necessary. The final steps involve reapproximating the orbital tissues, closing the periorbita, replacing and securing the bone window or flap with miniplates and screws, and closing the soft tissues and skin of the eyelid in layers to ensure proper healing and aesthetic outcomes.