| Type 1 Excludes |
| Kaposi's sarcoma of gastrointestinal sites (C46.4) |
| Type 2 Excludes |
| gastrointestinal stromal tumors (C49.A-) |
| C15 |
| Malignant neoplasm of esophagus |
| C16 |
| Malignant neoplasm of stomach |
| C17 |
| Malignant neoplasm of small intestine |
| C18 |
| Malignant neoplasm of colon |
| C19 |
| Malignant neoplasm of rectosigmoid junction |
| C20 |
| Malignant neoplasm of rectum |
| C21 |
| Malignant neoplasm of anus and anal canal |
| C22 |
| Malignant neoplasm of liver and intrahepatic bile ducts |
| C23 |
| Malignant neoplasm of gallbladder |
| C24 |
| Malignant neoplasm of other and unspecified parts of biliary tract |
| C25 |
| Malignant neoplasm of pancreas |
| C26 |
| Malignant neoplasm of other and ill-defined digestive organs |
