CPT code 78013 denotes a nuclear medicine thyroid uptake and imaging study performed after administration of radioiodine to determine how much radioiodine concentrates in the thyroid. This diagnostic test is clinically important for evaluating thyroid nodules, inflammation, structural abnormalities, and the causes of hyperthyroidism. Nationally, thyroid imaging with radioiodine remains a key tool in endocrinology and nuclear medicine pathways for thyroid disease assessment.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for the procedure, typical sites of service, common billing modifiers, and a synopsis of payer coverage patterns where available. The publication summarizes benchmarks and reimbursement context, highlights relevant policy considerations that affect access and billing, and provides practical coding references for revenue-cycle and clinical teams.

The piece is intended for a national audience of clinicians, coding professionals, and policy analysts who need a concise reference on clinical utility, billing context, and payer considerations for CPT code 78013.