CPT code 95966 represents magnetoencephalography (MEG) for recording and analyzing evoked brain magnetic activity. MEG is a specialized, noninvasive neuroimaging modality used to map brain function and evaluate neural responses to stimuli. Nationally, MEG is important for pre-surgical functional mapping, localization of epileptic foci, and research into sensory and cognitive processing, and it influences care pathways in neurology and neurosurgery.

Key payers referenced in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, typical sites of service, and the procedural scope of CPT code 95966. The publication summarizes common billing considerations and the service line context, and outlines what to expect in payer coverage patterns and documentation requirements at a national level. The piece highlights benchmarks and policy-relevant points affecting utilization and reimbursement for advanced neurodiagnostic services. Data not provided in the input (such as associated taxonomies, specific ICD-10 diagnoses, related codes, and service-line cost benchmarks) are noted as unavailable where applicable.