2006 ICD-9-CM Volume 1 Diagnosis Codes > Neoplasms 140-239 > Malignant Neoplasm Of Digestive Organs And Peritoneum 150-159 > 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