CPT® Code 42550

An injection procedure for sialography, designated by CPT® Code 42550, involves the administration of a contrast agent into the salivary ducts to visualize their structure and function through imaging techniques. This procedure is primarily utilized to assess the salivary glands and ducts for abnormalities, such as blockages or stones. The process begins with the evaluation of the salivary duct system through x-rays, which are performed prior to the injection to identify any existing obstructions, such as calculi. If no stones are found, a small catheter is carefully inserted into the salivary duct, allowing for the introduction of contrast media. This contrast agent enhances the visibility of the ductal system during imaging. The flow of the contrast is then monitored using radiographic techniques to ensure proper distribution and to identify any potential issues within the salivary glands. Additionally, to further stimulate saliva production and enhance the imaging process, a sour liquid, such as lemon juice, may be administered orally to the patient. This step can help in obtaining clearer images of the salivary ducts as additional radiographs are taken to capture the dynamics of saliva flow and any potential obstructions that may not have been visible initially.