CPT code 64913 covers the use of a donor-derived nerve tissue graft for peripheral nerve repair and represents billing for each additional nerve strand beyond the initial graft. This microsurgical procedure supports reconstruction of damaged nerves using cadaveric or living-donor nerve allografts or autografts and is relevant to specialty surgical practices and hospitals performing peripheral nerve reconstruction nationwide. Key commercial and public payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code’s clinical context, typical sites of service, and the role of additional-strand reporting in surgical documentation. The publication also outlines common modifiers used with this code, payer coverage considerations where available, and how 64913 relates to operative reporting and charge capture. Data not available in the input is noted where payer-specific policies, associated taxonomies, ICD-10 diagnoses, and related codes would normally be detailed.