C15 Malignant neoplasm of oesophagus

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 intranhepatic 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