G9659 HCPCS - PATIENTS GREATER THAN OR EQUAL TO 86 YEARS OF AGE WHO UNDERWENT A SCREENING COLONOSCOPY AND DID NOT HAVE A HISTORY OF COLORECTAL CANCER OR OTHER VALID MEDICAL REASON FOR THE COLONOSCOPY, INCLUDING: IRON DEFICIENCY ANEMIA, LOWER GASTROINTESTINAL BLEEDING, CROHN'S DISEASE (I.E., REGIONAL ENTERITIS), FAMILIAL ADENOMATOUS POLYPOSIS, LYNCH SYNDROME (I.E., HEREDITARY NON-POLYPOSIS COLORECTAL CANCER), INFLAMMATORY BOWEL DISEASE, ULCERATIVE COLITIS, ABNORMAL FINDING OF GASTROINTESTINAL TRACT, OR CHANGES IN BOWEL HABITS