CPT® Code 61581

Craniofacial approach to anterior cranial fossa; extradural, including lateral rhinotomy, orbital exenteration, ethmoidectomy, sphenoidectomy and/or maxillectomy

The CPT® Code 61581 refers to a surgical procedure known as a craniofacial approach to the anterior cranial fossa, specifically performed in an extradural manner. This complex procedure is designed to expose lesions located in the extradural space, which is the area outside the dura mater, the outermost layer of the protective covering of the brain. The approach involves a combination of surgical techniques, including lateral rhinotomy, orbital exenteration, ethmoidectomy, sphenoidectomy, and/or maxillectomy. Each of these techniques serves a specific purpose in accessing the targeted area effectively. The lateral rhinotomy involves an incision that begins at the medial edge of the eyebrow and extends down the side of the nose, allowing access to the nasal and facial structures. The orbital exenteration entails the removal of the eyeball and surrounding orbital contents, which is crucial when dealing with malignant tumors that have invaded the periorbital region. Ethmoidectomy and sphenoidectomy involve the complete resection of the mucosa and bone of the ethmoid and sphenoid sinuses, respectively, to facilitate access to the extradural lesion. This procedure is typically indicated for patients with malignant tumors that have spread to the maxillary sinus and may require extensive resection of surrounding structures to ensure complete removal of the tumor and to preserve neurovascular integrity during the operation.