CPT code 90658 denotes a trivalent, split-virus influenza vaccine supplied as a 0.5 mL intramuscular dose. This vaccine code is used broadly across ambulatory and community settings during influenza season and is central to national immunization efforts to reduce influenza morbidity and healthcare utilization. Insurers and public payers reimburse for vaccine products and administration according to policy guidelines and seasonal recommendations, making this code important for providers, payers, and public health planners.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for the vaccine, typical sites of service, and the coding specifics tied to product and route of administration. The publication outlines benchmarks and utilization context, summarizes common payer coverage practices, and highlights relevant policy updates that affect vaccine billing and reimbursement nationally. Clinical context explains the vaccine type and route, while billing context clarifies when CPT code 90658 applies. Data not available in the input are identified where applicable.