CPT code 64790 represents surgical excision of a tumor located along or within the nerve sheath of a major peripheral nerve. This operative code captures a specialized neurosurgical or peripheral nerve surgery procedure performed in an operating room or ambulatory surgical center and is used in claims for removal of nerve sheath neoplasms such as schwannomas when they involve major peripheral nerves. Nationally, accurate coding for these procedures matters for clinical tracking, appropriate resource allocation, and consistent payment across commercial and public payers.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for CPT code 64790, typical sites of service, and the kinds of benchmarks and billing considerations commonly reviewed by payers and provider billing teams. The publication summarizes payment and utilization benchmarks where available, highlights policy and documentation elements that commonly affect claims processing, and provides clinical context to help coding specialists and surgical teams align operative reports with billing. Data not available in the input is noted where applicable.