In simple words: A specialized CT scan of your heart that uses dye to create detailed 3D images of the heart's arteries and any bypass grafts. This helps doctors assess heart function and identify any abnormalities.

Computed tomographic angiography, heart, coronary arteries and bypass grafts (when present), with contrast material, including 3D image postprocessing (including evaluation of cardiac structure and morphology, assessment of cardiac function, and evaluation of venous structures, if performed).

Example 1: A patient with a history of chest pain and abnormal EKG undergoes a CCTA to evaluate for coronary artery disease., A patient with a known coronary artery bypass graft undergoes CCTA to assess graft patency and cardiac function., A patient with suspected congenital heart disease undergoes a CCTA to visualize the heart's anatomy and blood flow.

Documentation should include the medical necessity for the procedure, details of the contrast administration, and the physician's interpretation of the 3D images. It must also contain information about bypass grafts present, if performed.

** Code 75574 includes the evaluation of cardiac structure and morphology, assessment of cardiac function, and evaluation of venous structures when performed. Do not report noninvasive estimate of coronary fractional flow reserve derived from augmentative software analysis with this code, use 75580 instead. For automated quantification and characterization of coronary atherosclerotic plaque, see 0623T, 0624T, 0625T, 0626T.