- 520-529 
 Diseases Of Oral Cavity, Salivary Glands, And Jaws - 530-538 
 Diseases Of Esophagus, Stomach, And Duodenum - 540-543 
 Appendicitis - 550-553 
 Hernia Of Abdominal Cavity - 555-558 
 Noninfective Enteritis And Colitis - 560-569 
 Other Diseases Of Intestines And Peritoneum - 570-579 
 Other Diseases Of Digestive System