CPT® Code 73502

A radiologic examination of the hip, designated by CPT® Code 73502, involves imaging of either the left or right hip joint, and may also include the pelvis when performed. This procedure utilizes X-ray technology, which employs indirect ionizing radiation to create images of the internal structures of the body. The principle behind X-ray imaging is based on the varying densities and compositions of human tissues, which affect how X-rays are absorbed or transmitted. As a result, some X-rays are absorbed by denser materials, such as bone, while others pass through less dense tissues, allowing for the creation of a two-dimensional image on a detector positioned behind the area being examined. The primary purpose of this examination is to assess the hip joint for various conditions that may affect its structure and function. Common indications for performing this radiologic examination include the evaluation of fractures, dislocations, deformities, degenerative bone diseases, osteomyelitis, arthritis, the presence of foreign bodies, infections, or tumors. The standard views typically captured during this examination include the anteroposterior view, which is taken with the patient lying supine and the legs straight, slightly rotated inward; the lateral 'frog-leg' view, where the hips are flexed and abducted with the knees bent and the soles of the feet together; and a cross-table view, which requires the unaffected hip and knee to be flexed at a 90-degree angle to allow the X-ray beam to be directed perpendicular to the long axis of the femur on the affected side. Additionally, a lateral view may be taken with the hip flexed and abducted at 45 degrees, with the X-ray beam aimed perpendicular to the examination table. For coding purposes, CPT® Code 73501 is used for a single view of the hip, while CPT® Code 73502 is specifically for a unilateral hip examination consisting of 2-3 views, and CPT® Code 73503 is designated for examinations that include a minimum of 4 views.