2006 ICD-9-CM Volume 1 Diagnosis Codes > Diseases Of The Digestive System 520-579 > Hernia Of Abdominal Cavity 550-553 > 550 Inguinal hernia 551 Other hernia of abdominal cavity with gangrene 552 Other hernia of abdominal cavity with obstruction but without mention of gangrene 553 Other hernia of abdominal cavity without mention of obstruction or gangrene