Q133 Colorectal Cancer Screening - Q142A Exclusions apply for patients with known cancer being followed by a physician; with known inflammatory bowel disease; who have had a colonoscopy within the last 10 years; with a history of malignant bowel disease; or with Colorectal Cancer any disease requiring regular colonoscopies for surveillance purposes. Please note that although the above change has increased the length of time that the colonoscopy is valid for exclusion, the Q142A must still be submitted every 30 months to be reported on the Target Population and Service Reports.