2006 ICD-9-CM Volume 1 Diagnosis Codes > Diseases Of The Digestive System 520-579 > Other Diseases Of Intestines And Peritoneum 560-569 > 560 Intestinal obstruction without mention of hernia 562 Diverticula of intestine 564 Functional digestive disorders not elsewhere classified 565 Anal fissure and fistula 566 Abscess of anal and rectal regions 567 Peritonitis 568 Other disorders of peritoneum 569 Other disorders of intestine