CPT® Code 74262

Computed tomographic (CT) colonography, diagnostic, including image postprocessing; with contrast material(s) including non-contrast images, if performed

Computed tomographic (CT) colonography, commonly known as virtual colonoscopy, is a non-invasive diagnostic imaging procedure utilized to evaluate the colon for signs of bowel disease. This procedure is particularly indicated for patients who present with symptoms or conditions that may suggest abnormalities within the bowel, such as unexplained abdominal pain, changes in bowel habits, or screening for colorectal cancer. Prior to the CT colonography, patients undergo a bowel preparation regimen the night before to ensure that the colon is free of stool, which is essential for obtaining clear 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 crucial as it allows for better visualization of the colon walls during imaging. The procedure involves obtaining both non-contrast and contrast-enhanced images, with the latter providing additional detail about the colon's structure and any potential lesions. The images are processed to create three-dimensional reconstructions of the colon, which are then analyzed by the physician to identify any abnormalities. A comprehensive written report detailing the findings is generated for further clinical evaluation.