- 150 Malignant neoplasm of esophagus
- 151 Malignant neoplasm of stomach
- 152 Malignant neoplasm of small intestine including duodenum
- 153 Malignant neoplasm of colon
- 154 Malignant neoplasm of rectum rectosigmoid junction and anus
- 155 Malignant neoplasm of liver and intrahepatic bile ducts
- 156 Malignant neoplasm of gallbladder and extrahepatic bile ducts
- 157 Malignant neoplasm of pancreas
- 158 Malignant neoplasm of retroperitoneum and peritoneum
- 159 Malignant neoplasm of other and ill-defined sites within the digestive organs and peritoneum