CPT® Code 73590

A radiologic examination of the tibia and fibula, designated by CPT® Code 73590, involves the use of X-ray imaging to visualize the bones located in the distal lower extremities, which may also encompass the knee and ankle joints. This procedure employs indirect ionizing radiation to capture images of the internal structures of the body. X-rays are particularly effective on non-uniform materials, such as human tissue, due to the varying densities and compositions of these materials. As a result, some X-rays are absorbed while others pass through, allowing for the creation of a two-dimensional image on a detector positioned behind the body part being examined. The primary purpose of obtaining radiographs of the tibia and fibula is to investigate potential causes of symptoms such as pain, limping, or swelling. Additionally, these X-rays are instrumental in diagnosing various conditions, including fractures, dislocations, deformities, degenerative diseases, osteomyelitis, arthritis, foreign bodies, and the presence of cysts or tumors. Furthermore, tibia and fibula X-rays are utilized to assess the alignment of lower extremity bones following treatment for fractures, ensuring that healing is progressing appropriately. The standard views captured during this examination include the anteroposterior (AP) view, which is taken from front to back, and the lateral view, which is taken from the side. The specific code 73590 is designated for reporting an X-ray examination of the tibia and fibula that includes two views, while a different code, 73592, is used for similar examinations in infants aged 30 days to 24 months, also requiring a minimum of two views.