CPT code 78015 represents a diagnostic nuclear medicine thyroid scan used to assess thyroid function, identify thyroid nodules, and in some cases perform whole-body imaging for patients with prior thyroid cancer. This imaging code is clinically important because it guides diagnosis and staging for thyroid disorders and can influence management decisions for nodules and malignancy surveillance. Nationally, thyroid imaging use intersects with specialty care in endocrinology, oncology, and nuclear medicine.

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 CPT code 78015, typical sites of service, and the service category. The publication summarizes common billing modifiers and identifies where input is not available. It also outlines what to expect in benchmarking and reimbursement discussions and highlights policy considerations relevant to imaging utilization and prior authorization trends. Data not available in the input is noted when applicable. The report is intended for billing managers, practice administrators, and policy analysts seeking a national-level briefing on CPT code 78015 and its clinical and billing context.