CPT® Code 69950

The procedure described by CPT® Code 69950 refers to a vestibular nerve section performed via a transcranial approach, which is also known as the middle cranial fossa approach. This surgical intervention is specifically indicated for patients experiencing severe recurrent episodes of vertigo, a condition characterized by a sensation of spinning or dizziness. The vestibular nerve, which is responsible for transmitting balance information from the inner ear to the brain, is targeted in this procedure to alleviate the debilitating symptoms associated with vestibular disorders. The surgical technique involves making a long curvilinear incision over the temporal bone on the side affected by vertigo. Following this incision, a lateral craniectomy is executed to expose the temporal lobe, which is then retracted medially to provide access to the superior surface of the temporal bone. The internal auditory canal is subsequently identified and opened, allowing the surgeon to locate and section both the superior and inferior vestibular nerves. After the nerve sectioning is completed, the surgical site is irrigated, the bone flap is replaced and secured, and the soft tissues are meticulously closed to promote healing. This detailed approach ensures that the procedure is performed with precision, aiming to significantly reduce or eliminate the patient's vertiginous symptoms.