HCPCS Level II code A9584 denotes Iodine 1-123 ioflupane supplied for a diagnostic study dose up to 5 millicuries. This radiotracer is central to nuclear medicine imaging that evaluates the brain's presynaptic dopamine transporter system, informing diagnoses such as Parkinsonian syndromes and other movement disorders. As a radiopharmaceutical supply code, A9584 is billed alongside imaging procedure codes and is relevant to both clinical workflows and coverage determinations across payers.

Key payers in the national landscape include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides a concise view of coverage patterns, coding and billing considerations, and clinical context affecting utilization of Iodine 1-123 ioflupane. Readers will find benchmarks for use and reimbursement practices, summary guidance on how the code is typically paired with imaging procedure codes and sites of service, and notes on recent policy or coding clarifications where applicable. Data not available in the input is identified as such where necessary.

This summary is intended for billing professionals, practice administrators, and imaging clinicians seeking a practical reference for how HCPCS Level II code A9584 is used in diagnostic nuclear medicine services nationwide.