In simple words: This is a special kind of X-ray of your colon that helps doctors look for signs of cancer or polyps (small growths).It's done with a CT scanner, and the pictures it takes allow doctors to see inside your colon without using a regular colonoscope.

This code represents a CT colonography, a non-invasive imaging procedure used for colorectal cancer screening. It includes the entire process of prepping the patient (administering bowel cleansing agents, and rectal catheter insertion for insufflation with air or carbon dioxide), conducting the CT scan, and post-processing the images to create two- and three-dimensional representations of the colon.

Example 1: A 50-year-old patient with a family history of colon cancer undergoes a screening CT colonography for early detection of colorectal cancer., A patient experiences rectal bleeding. After a clinical evaluation, a CT colonography is performed to evaluate the colon for abnormalities., A patient who is unable to undergo traditional colonoscopy due to medical reasons undergoes a CT colonography as an alternative screening tool.

Documentation must include details about the bowel preparation, the insufflation method used (air or carbon dioxide), the patient's positioning during the scan, any difficulties encountered, the quality of the bowel preparation, and the findings of the image postprocessing.