CPT code 78459 represents a cardiac positron emission tomography (PET) metabolic study used to evaluate myocardial metabolism—such as oxygen, glucose, or drug metabolism—and may include ventricular wall motion and ejection fraction assessment when performed within the same single study. This specialized diagnostic imaging code is important nationally for cardiac care pathways that require precise metabolic and functional assessment, particularly in ischemic heart disease evaluation, viability assessment, and advanced heart failure management.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for cardiac PET metabolic imaging, typical sites of service, and the common billing and coding considerations tied to single-study reporting. The publication outlines expected coverage and utilization drivers, benchmarking topics, and recent policy considerations affecting access to PET metabolic cardiac imaging. It also highlights potential areas of payer variability in prior authorization, documentation expectations, and clinical indications that influence national utilization patterns. Data not available in the input where applicable will be noted in specific sections.