CPT® Code 73520

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A radiologic examination of the hips, specifically coded as CPT® 73520, involves the use of X-ray imaging to obtain detailed images of both hips. This procedure utilizes indirect ionizing radiation, which allows for the visualization of internal structures within the body. X-rays are particularly effective for examining non-uniform materials, such as human tissue, due to the varying densities and compositions present. As X-rays pass through the body, some are absorbed while others are transmitted, resulting in a two-dimensional image captured on a detector. This imaging technique is essential for diagnosing a variety of conditions affecting the hips, including fractures, dislocations, deformities, degenerative bone diseases, osteomyelitis, arthritis, foreign bodies, infections, and tumors. The standard views typically obtained during this examination include the anteroposterior (AP) view, which is taken with the patient lying supine, legs straight, and slightly rotated inward. Additionally, the lateral 'frog-leg' view is commonly performed, where the hips are flexed and abducted, with the knees bent and the soles of the feet together. A cross-table view may also be utilized, positioning the unaffected hip and knee at a 90-degree angle to allow for unobstructed imaging of the affected side. Another lateral view can be captured with the hip flexed and abducted at 45 degrees, ensuring the X-ray beam is directed perpendicular to the table. The CPT® code 73520 specifically denotes an X-ray examination of both hips that includes a minimum of two distinct projections for each hip, with the requirement of an anteroposterior view of the pelvis while the patient is in a supine position with legs slightly rotated inward.