Tag: lungperfusion

Basics of Lung Perfusion and Ventilation CPT codes There are two components of lung function, ventilation and perfusion. Ventilation refers to the ability of air to reach all areas of the lung. The perfusion scan measures the blood supply through the lungs. A ventilation and perfusion scan is most often done to detect a pulmonary embolus (blood clot in the lungs). It is also used to detect abnormal circulation (shunts) in the blood vessels of the lungs (pulmonary vessels) In medical coding, different procedure codes are assigned for reporting Lung perfusion and ventilation scan exam. CPT code 78579…