
Benign neoplasm of other parts of digestive system
- A non-metastasizing neoplasm arising from any part of the gastrointestinal system.

Benign neoplasm of esophagus
- A non-metastasizing neoplasm arising from the esophageal wall.

Benign neoplasm of stomach
- A non-metastasizing neoplasm arising from the gastric wall.

Benign neoplasm of duodenum jejunum and ileum
- A non-metastasizing neoplasm arising from the wall of the small intestine.

Benign neoplasm of colon
- A non-metastasizing neoplasm arising from the wall of the colon.
- A non-metastasizing neoplasm arising from the wall of the colon and rectum.
- A non-metastasizing neoplasm arising from the wall of the cecum.
- A non-metastasizing neoplasm arising from the appendix.

Benign neoplasm of rectum and anal canal
- A non-metastasizing neoplasm arising from the anus.

Benign neoplasm of liver and biliary passages
- A non-metastasizing neoplasm arising from the gallbladder wall.

Benign neoplasm of pancreas except islets of langerhans

Benign neoplasm of islets of langerhans
- An uncommon benign or malignant neoplasm, arising from the islet cells of the pancreas. Based on the clinical manifestations, it is classified as functioning or non-functioning.

Benign neoplasm of retroperitoneum and peritoneum

Benign neoplasm of other and unspecified site in the digestive system
- A non-metastasizing neoplasm arising from the small or large intestine.
- A non-metastasizing neoplasm arising from any part of the gastrointestinal system.