CPT code 78432 designates a dual-tracer PET myocardial imaging study that concurrently evaluates myocardial perfusion and metabolic activity to assess blood flow, metabolism (oxygen, glucose, or drug metabolism), and myocardial viability. This hybrid functional study can also include measurement of ejection fraction and ventricular wall motion when performed. The code matters nationally because PET myocardial imaging contributes to diagnosis and management of ischemic heart disease, viability assessment prior to revascularization, and complex heart failure evaluation, with implications for imaging capacity, payer coverage, and clinical pathways.

Key payers referenced include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for dual-tracer PET myocardial studies, payment and coverage considerations across major national payers, and benchmarking materials where available. The publication outlines common service settings, expected clinical indications, and typical components of the study that affect coding and billing. Data not available in the input for Associated Taxonomies, ICD-10 diagnoses, and related codes are noted as such. This summary is intended to inform coding, administrative planning, and payer engagement at a national level.