CPT® Code 73702

Computed tomography (CT) of the lower extremity 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 initial phase of the procedure, as indicated by CPT® Code 73702, involves performing a CT scan without the use of contrast material. This allows for a preliminary assessment of the lower extremity. Following this initial imaging, contrast material is then administered to enhance the visibility of the structures within the leg, allowing for a more comprehensive evaluation. The contrast material, typically an iodine-based dye, improves the differentiation of tissues and highlights any abnormalities present. The data collected during the scan is processed by computer software, which generates multiple 2D slices of the targeted area. These slices can be stacked to create three-dimensional models of the leg, providing a more thorough understanding of the anatomical structures. The physician interprets the resulting images to identify potential issues such as tumors, abscesses, or masses, and assesses the condition of the bones for any degenerative changes, fractures, or injuries resulting from trauma. The findings are documented in a written report, which serves as a critical component of the patient's medical record and guides further clinical decision-making.