CPT® Code 64581

Open implantation of a neurostimulator electrode array for sacral nerve stimulation involves a surgical procedure aimed at treating various voiding dysfunctions. These dysfunctions may include conditions such as urge incontinence, urgency, frequency, and nonobstructive urinary retention. The procedure is performed through a direct transforaminal approach, which means that the electrode array is implanted by accessing the sacral nerve through the sacral foramen. This method allows for precise placement of the neurostimulator electrode array, which is essential for effective stimulation of the sacral nerve. The procedure begins with the preparation of the skin and the administration of a local anesthetic to ensure patient comfort. Following this, an incision is made in the midline of the skin over the sacrum, and the underlying tissues are carefully dissected to expose the sacrum. A foramen needle is then inserted into the selected sacral foramen, allowing for the connection of a power source to facilitate stimulation. The position of the needle is adjusted until the desired motor response is achieved, confirming the correct placement of the electrode array. This electrode array is then positioned adjacent to the sacral nerve, and its placement is verified through further stimulation testing. Finally, the electrode array is tunneled to the site where the generator or receiver will be implanted, which is a separate procedure, and the surgical site is closed in layers to ensure proper healing.