CPT® Code 69745

1. Indications

The procedure associated with CPT® Code 69745 is indicated for the following conditions:

• Facial Nerve Injury - This procedure is performed when there is a severed or damaged facial nerve in the intratemporal region, which may result from trauma, surgical complications, or other pathological conditions.
• Facial Nerve Compression - Indications also include cases where the facial nerve is compressed, necessitating decompression to restore normal function.
• Neuroma or Tumor Removal - The procedure may be indicated following the excision of a neuroma or tumor that has affected the integrity of the facial nerve.

2. Procedure

The surgical procedure for CPT® Code 69745 involves several critical steps to ensure proper access and repair of the facial nerve:

• Step 1: Incision and Access - The surgeon begins by making an incision behind the ear, which allows for the performance of a mastoidectomy. This step is essential to access the intratemporal region of the facial nerve.
• Step 2: Exposure of the Facial Nerve - Once the mastoidectomy is completed, the surgeon carefully exposes the facial nerve along its vertical segment, continuing until reaching the stylomastoid foramen. This exposure is crucial for visualizing the nerve and assessing any damage.
• Step 3: Bone Removal - The surgeon utilizes a burr to remove the bone that is overlying the facial nerve, particularly in the tympanic segment, to facilitate better access and visualization of the nerve.
• Step 4: Inspection and Identification - The facial nerve is thoroughly inspected to identify the damaged or severed portion. The surgeon may also expose the nerve sheath beyond the injury site to evaluate the extent of the damage.
• Step 5: Decompression - If necessary, the nerve sheath is incised laterally to the geniculate ganglion to relieve any compression on the nerve, which is critical for restoring nerve function.
• Step 6: Nerve Repair - The repair of the facial nerve is performed using fine microfilament sutures. The surgeon employs microinstruments and an operating microscope to ensure precision during the suturing process.
• Step 7: Grafting (if required) - If a nerve graft is necessary due to significant loss of nerve tissue, it is harvested and secured to the remaining segments of the facial nerve using 2-3 sutures placed through the epineurium, ensuring a stable connection for potential regeneration.
• Step 8: Final Inspection and Closure - After the repair is completed, the surgical site is inspected for hemostasis and proper alignment of the nerve before the incision is closed.

3. Post-Procedure

Post-procedure care following the surgical intervention for CPT® Code 69745 includes monitoring for any signs of complications, such as infection or hematoma formation. Patients may experience swelling and discomfort in the area of the incision, which can be managed with appropriate analgesics. Follow-up appointments are essential to assess the recovery of facial nerve function and to monitor for any potential complications. Rehabilitation may be recommended to aid in the recovery of facial muscle function, and patients should be educated on signs of nerve recovery or any adverse symptoms that may require further medical attention.