CPT® Code 95957

The CPT® Code 95957 refers to the digital analysis of an electroencephalogram (EEG), specifically utilized for tasks such as epileptic spike analysis. An electroencephalogram is a diagnostic test that measures electrical activity in the brain through electrodes placed on the scalp. The digital analysis process involves advanced computational tools that enhance the interpretation of the EEG data. This includes the ability to modify filtering settings, adjust horizontal and vertical display scales, and reformat the montage, which is the arrangement of electrodes used to capture the brain's electrical signals. In this procedure, the EEG is recorded with minimal analog filtering, ensuring that the data captured is as accurate as possible. A single common reference is used for all electrodes, which simplifies the analysis. The technician employs a computer to reformat the EEG recording into various montages, either referential or bipolar, depending on the clinical needs. This digital reformatting is crucial as it allows for the application of different filters to segments of the EEG that exhibit abnormalities, enabling a more detailed examination of the brain's electrical activity. The ability to reformat the EEG multiple times with different montages and filters enhances the visualization of abnormalities, which is essential for distinguishing between epileptiform brain wave patterns—indicative of epilepsy—and nonepileptiform patterns. After the digital analysis is completed, the physician reviews both the original and the digitally reformatted EEGs, leading to a comprehensive evaluation. The findings from this analysis are then documented in a written report, which is critical for guiding further clinical decisions and treatment options.