CPT® Code 70373

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Contrast laryngography is a specialized diagnostic radiographic examination focused on the larynx, which is the voice box located in the throat. This procedure involves the application of a radiopaque dye or contrast material to the mucosal surfaces of the larynx, enhancing the visibility of its structures during imaging. Prior to the procedure, local anesthesia is administered to the larynx to minimize discomfort. A nasal catheter is then carefully inserted above the epiglottis, allowing for the instillation of a contrast agent, specifically propyliodine, which coats the laryngeal surfaces. Following this preparation, X-ray images are captured using indirect ionizing radiation. The principle behind X-ray imaging relies on the varying densities and compositions of human tissues, which interact differently with the X-rays. Some X-rays are absorbed by denser materials, while others pass through, creating a two-dimensional image on a detector positioned behind the subject. The resulting contrast images are crucial for providing detailed information about the laryngeal surface, enabling physicians to identify potential abnormalities such as tumors or benign lesions. This procedure is essential for diagnosing various laryngeal conditions and guiding further management or treatment options.