CPT® Code 74263

Computed tomographic (CT) colonography, commonly known as virtual colonoscopy, is a non-invasive imaging procedure designed to screen for abnormalities within the colon, such as polyps, masses, or lesions. This advanced imaging technique utilizes CT technology to create detailed images of the colon and rectum, allowing for thorough examination without the need for traditional colonoscopy. Prior to the procedure, patients undergo a bowel preparation regimen the night before to ensure that the bowel is clear of stool, which is crucial for obtaining high-quality images. During the procedure, a small flexible tube is inserted into the rectum to introduce air or carbon dioxide gas into the colon, facilitating its distension. This distension is essential for capturing clear images of the colon walls. The patient is positioned on the CT table, and imaging is performed in two phases: first while the patient is lying on their back (supine) and then while lying on their stomach (prone). This dual positioning allows for comprehensive imaging of the colon from multiple angles. After the images are obtained, they are processed to create three-dimensional reconstructions of the colon, which can be adjusted for optimal visualization. The resulting images are then compared to any prior radiological studies, and a physician interprets the findings, providing a detailed written report that outlines any detected abnormalities.