CPT® Code 73701

Computed tomography (CT) of the lower extremity, specifically coded as CPT® 73701, is a diagnostic imaging procedure that utilizes advanced X-ray technology to create detailed images of the leg's tissues and bone structures. This procedure employs multiple, narrow X-ray beams that rotate around a single axis, capturing a series of two-dimensional (2D) images from various angles. The use of contrast material, typically an iodine-based dye administered intravenously, enhances the visibility of the targeted area, allowing for clearer and more precise imaging. The data collected during the scan is processed by computer software, which generates several thin, cross-sectional 2D slices of the leg. These individual slices can be stacked to create three-dimensional models, providing a comprehensive view of the anatomy. The patient lies on a table that moves into the CT scanner, where the imaging takes place. Unlike CPT® 73700, which does not utilize contrast material, CPT® 73701 specifically involves the use of contrast to improve the diagnostic quality of the images. This procedure is crucial for identifying various conditions, including tumors, abscesses, or masses, as well as assessing bone integrity for degenerative diseases, fractures, or injuries resulting from trauma. The physician interprets the CT images, documenting any abnormalities and providing a detailed written report of the findings.