| C17.0 | Malignant neoplasm of duodenum |
| C18 | Malignant neoplasm of colon |
| C18.9 | Malignant neoplasm of colon, unspecified |
| D12 | Benign neoplasm of colon, rectum, anus and anal canal |
| D12.0 | Benign neoplasm of cecum |
| D12.1 | Benign neoplasm of appendix |
| D12.2 | Benign neoplasm of ascending colon |
| D12.3 | Benign neoplasm of transverse colon |
| D12.4 | Benign neoplasm of descending colon |
| D12.5 | Benign neoplasm of sigmoid colon |
| D12.6 | Benign neoplasm of colon, unspecified |
| D12.7 | Benign neoplasm of rectosigmoid junction |
| D12.8 | Benign neoplasm of rectum |
| D12.9 | Benign neoplasm of anus and anal canal |
| D13.1 | Benign neoplasm of stomach |
| D13.2 | Benign neoplasm of duodenum |
| D13.91 | Familial adenomatous polyposis |
| D50 | Iron deficiency anemia |
| D50.0 | Iron deficiency anemia secondary to blood loss (chronic) |
| K62.5 | Hemorrhage of anus and rectum |
| K63.5 | Polyp of colon |
| R10.84 | Generalized abdominal pain |
| R19.4 | Change in bowel habit |
| R53.0 | Neoplastic (malignant) related fatigue |
| Z12.11 | Encounter for screening for malignant neoplasm of colon |
| Z15.060 | Genetic susceptibility to colorectal cancer |
| Z15.09 | Genetic susceptibility to other malignant neoplasm |
| Z79.899 | Other long term (current) drug therapy |
| Z80.0 | Family history of malignant neoplasm of digestive organs |
| Z83.71 | Family history of colonic polyps |
| Z83.711 | Family history of hyperplastic colon polyps |
| Z83.718 | Family history of other colon polyps |
| Z83.719 | Family history of colon polyps, unspecified |
| Z83.72 | Family history of familial adenomatous polyposis |
| Z86.010 | Personal history of colon polyps |