A 55 year-old man presents with uncontrolled tremors that have become quite severe and are now disabling. A trial of a deep brain stimulator electrode is recommended. The patient is placed in the head holder adapter for the frame. The scalp is incised exposing the skull using a perforator to make a single burr hole 2.5 cm from the midline at the level of the coronal suture exposing the dura and is punctured for access. Microelectrode recording (MER) and stimulation is done to target and reposition the electrodes to determine the best placement for the neurostimulator electrode. The neurostimulator electrode array is placed in the thalamus and fastened into position with radiographic image monitoring placement. The lead is coiled in a pocket under the galea, which is sutured closed, followed by skin closure. What CPT® code is reported?