CPT® Code 73700

Computed tomography (CT) of the lower extremity, as described by CPT® Code 73700, is a diagnostic imaging procedure that provides detailed visualization of the tissues and bone structure of the leg. This technique employs multiple, narrow X-ray beams that are directed around a single rotational axis, capturing a series of two-dimensional (2D) images from various angles. The absence of contrast material in this procedure means that the images are generated solely based on the natural density differences of the tissues within the leg. The CT scanner processes the collected data through advanced computer software, resulting in several 2D slices that represent thin cross-sections of the targeted area. These individual slices can be stacked to create three-dimensional models of the leg, offering a comprehensive view of its internal structures. During the procedure, the patient is positioned on a table that slides into the CT scanner, where the imaging takes place. The physician subsequently reviews the CT scan to identify any abnormalities, such as tumors, abscesses, or masses, and assesses the condition of the bones for signs of degenerative changes, fractures, or injuries resulting from trauma. The findings are documented in a written interpretation provided by the physician, which is essential for guiding further clinical decisions and management of the patient's condition.