CPT® Code 61582

Craniofacial approach to anterior cranial fossa; extradural, including unilateral or bifrontal craniotomy, elevation of frontal lobe(s), osteotomy of base of anterior cranial fossa

The craniofacial approach to the anterior cranial fossa (ACF) is a surgical technique utilized primarily for accessing and treating various conditions affecting the ACF, including neoplastic tumors and vascular lesions located within the sinus and orbit. The ACF is anatomically defined by the frontal, ethmoid, and sphenoid bones, with its lateral boundaries formed by these structures. The floor of the ACF corresponds to the roof of the orbits, while centrally, it aligns with the vault of the nasal cavity and the fovea ethmoidalis. This approach can be performed through either a unilateral or bifrontal craniotomy, which involves making incisions in the scalp to gain access to the underlying cranial structures. The procedure entails careful dissection through multiple layers of tissue, including the subcutaneous tissue, galea, and superficial temporalis fascia, to expose the bone. The surgical team may harvest a flap from the pericranium or temporalis fascia for use in closing the dura after the procedure. The craniofacial approach is critical for enabling surgeons to perform necessary interventions while minimizing damage to surrounding tissues and structures.