CPT® Code 72200

A radiologic examination of the sacroiliac (SI) joints involves the use of X-ray imaging to visualize the area where the left and right winged pelvic bones connect with the sacrum, forming the posterior aspect of the pelvic ring. This examination is crucial due to the complex anatomy and irregular surfaces of the SI joints, which can pose challenges for imaging. The procedure typically begins with an anteroposterior (AP) view, where the patient is positioned supine with knees or hips flexed, if feasible. Following this, left and right oblique views are obtained with the patient recumbent and rotated approximately 25-30 degrees from the AP position. It is important to note that while the oblique views capture the side that is elevated, the patient is actually positioned for the opposite side to be down. Additionally, posteroanterior views may be taken with the patient in a prone position. The primary purpose of this radiologic examination is to assist in diagnosing various conditions, including spondyloarthropathies associated with rheumatic diseases, inflammatory lesions affecting the SI joint, sacroiliitis, ankylosing spondylitis, juvenile spondyloarthropathy, arthritis linked to inflammatory bowel disease, psoriatic arthritis, reactive arthritis, as well as potential fractures or dislocations. The X-ray imaging technique utilizes indirect ionizing radiation to create images of internal structures by exploiting the varying densities and compositions of human tissue, resulting in a two-dimensional representation of the anatomical features. If fewer than three views are captured during the examination, the appropriate code to report is 72200, whereas for three or more views, code 72202 should be utilized for a comprehensive examination.