| D13 | Benign neoplasm of other and ill-defined parts of digestive system |
| | Benign neoplasm of esophagus |
| | Benign neoplasm of stomach |
| | Benign neoplasm of duodenum |
| | Benign neoplasm of other and unspecified parts of small intestine |
| | Benign neoplasm of unspecified part of small intestine |
| | Benign neoplasm of other parts of small intestine |
| | Benign neoplasm of liver |
| | Benign neoplasm of extrahepatic bile ducts |
| | Benign neoplasm of pancreas |
| | Benign neoplasm of endocrine pancreas |
| | Benign neoplasm of ill-defined sites within the digestive system |
