CPT® Code 64865

The procedure described by CPT® Code 64865 involves the surgical suture of the facial nerve, specifically targeting the infratemporal portion. The facial nerve, known as cranial nerve VII (CN VII), is essential for facial expression and also contains fibers responsible for sensory and secretomotor functions. This procedure is a continuation of the repair process initiated in CPT® Code 64864, which focuses on the extracranial segment of the facial nerve. The infratemporal portion of the facial nerve is located deeper within the skull and is critical for the proper functioning of facial muscles. During the procedure, the surgeon exposes the affected nerve to assess the extent of the injury, which may involve debridement of damaged tissue. Intraoperative nerve function testing may be performed to evaluate nerve integrity. The repair can be executed using various techniques, including end-to-end closure, which involves approximating the two ends of the transected nerve. If necessary, a nerve graft may be utilized to ensure a tension-free connection between the nerve ends, typically using donor nerves such as the great auricular nerve or sural nerve. The meticulous approach to suturing the nerve is crucial for restoring function and minimizing complications, ensuring that the nerve is repaired effectively to facilitate recovery and restore facial movement.