CPT® Code 70328

The CPT® Code 70328 refers to a radiologic examination specifically targeting the temporomandibular joint (TMJ), which is the joint connecting the jawbone to the skull. This examination is performed with the patient's mouth both open and closed, allowing for a comprehensive assessment of the joint's condition. The procedure utilizes X-ray technology, which employs indirect ionizing radiation to create images of the internal structures of the body. X-rays are particularly effective in visualizing non-uniform materials, such as human tissue, due to the varying densities and compositions present. As a result, some X-rays are absorbed by the tissues while others pass through, ultimately being captured on a detector to produce a two-dimensional image of the TMJ. The physician interprets these images to identify potential issues such as narrowing of the joint spaces, alterations in the articular surfaces, including erosion or abnormal contours of the condyle, and other internal derangements or dislocations. One of the most prevalent conditions affecting the temporomandibular joint is degenerative joint disease, which can lead to pain and dysfunction. It is important to note that CPT® Code 70328 is designated for radiologic examinations conducted on one side of the joint only. For examinations involving both sides, CPT® Code 70330 should be reported instead.