CPT code 78802 represents a single–day, whole‑body nuclear medicine imaging study using a gamma–emitting radiotracer to diagnose and localize tumors, inflammatory processes, or to evaluate radiopharmaceutical distribution. The code also encompasses vascular flow and blood pool imaging of cardiac function when performed. This procedure is a key diagnostic tool in oncology, infection imaging, and select cardiac assessments, and its use affects imaging workflows, facility resource allocation, and reimbursement pathways nationally.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context and common service settings, benchmarking expectations across major payers, and notes on billing considerations relevant to single–day whole‑body nuclear imaging. The publication outlines common modifiers used with the service and highlights areas where policy updates and payer-specific rules commonly influence coverage and claims processing. Clinical teams, coding specialists, and revenue managers will learn how CPT code 78802 fits into diagnostic imaging portfolios and what to expect when submitting claims for whole‑body nuclear medicine studies. Data not available in the input for specific payer rate values, associated taxonomies, and ICD‑10 diagnosis mappings are noted where applicable.