CPT® Code 95816

An Electroencephalogram (EEG) is a diagnostic procedure that measures and records the electrical activity of the brain. This test is crucial for identifying various neurological conditions. The EEG is particularly useful in diagnosing seizure disorders, as it can capture abnormal electrical discharges that occur during seizures. Additionally, it helps determine the underlying causes of confusion, investigate episodes of unconsciousness, evaluate head injuries, and identify other brain-related conditions such as tumors, infections, degenerative diseases, or metabolic disturbances. Furthermore, an EEG can be employed to assess sleep disorders, providing insights into the brain's activity during different sleep stages. During the procedure, a trained EEG technician applies sixteen or more electrodes to specific locations on the scalp using a conductive paste, ensuring optimal contact for accurate readings. These electrodes are connected to an amplifier and a recording machine, which translates the brain's electrical signals into wavy lines on graph paper. The patient is instructed to remain still with their eyes closed while the recording takes place. The EEG process includes both awake and drowsy states, with specific techniques such as hyperventilation or photic stimulation used to provoke seizure activity during the awake phase. To capture brain activity during the drowsy or asleep phase, patients are advised to limit their sleep the night before the test. In cases where patients are in a coma, the EEG can still be performed to assess any existing brain activity. After the procedure, a physician reviews the recorded data and provides a comprehensive written interpretation of the results.