CPT code 78451 represents a single SPECT myocardial perfusion imaging study used to identify areas of deficient blood flow to the heart. This diagnostic nuclear cardiology procedure is used widely to evaluate ischemia, guide clinical management of coronary artery disease, and inform decisions about further testing or intervention. Nationally, myocardial perfusion imaging remains an important tool for risk stratification and resource utilization in cardiovascular care.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a focused review of the clinical purpose of the code, common sites of service, and the payer landscape covered in the analysis. The publication provides benchmarks and policy context relevant to coverage and utilization of SPECT myocardial perfusion studies, highlights coding and billing considerations that affect claim adjudication, and summarizes clinical indications that underpin appropriate use.

This summary is intended for health system administrators, coding and billing professionals, and clinicians involved in nuclear cardiology. It outlines what stakeholders need to know about CPT code 78451 at the national level, including where the service is typically delivered and why the procedure matters for patient care and payer coverage decisions.