CPT code 95957 denotes a computer-based analysis of an electroencephalogram (EEG), a neurodiagnostic procedure that applies computational algorithms to EEG recordings to quantify waveforms and support clinical interpretation. This code matters nationally because computer-assisted EEG analysis is increasingly used to improve detection of seizure activity, characterize sleep and encephalopathic patterns, and standardize reporting across facilities. Its use affects billing for neurodiagnostic services in hospitals, ambulatory EEG centers, and inpatient neurology units.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of what 95957 represents, expected sites of service, and the clinical context in which computer-based EEG analysis is applied. The publication provides operational benchmarks where available, outlines common billing modifiers and their use cases, maps typical clinical scenarios tied to EEG analysis, and highlights policy and documentation considerations that influence coverage and claim adjudication nationally. Data gaps in the input are noted as unavailable; the content focuses on clear description, coding context, and payer relevance for stakeholders involved in neurodiagnostic service delivery and revenue cycle management.