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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Hernia Of Abdominal Cavity 550-553 > Other Hernia Of Abdominal Cavity With Gangrene 551.* > 2007 ICD-9-CM Diagnosis 551.20 Unspecified ventral hernia with gangrene  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 551.20 can be accessed here. 551.20 is a specific code that can be used to specify a diagnosis 551.20 contains 2 index entries View the ICD-9-CM Volume 1 551.* hierarchy Index entries containing 551.20: Hernia, hernial (acquired) (recurrent) 553.9 ventral 553.20 with gangrene (obstructed) 551.20 obstruction 552.20 and gangrene 551.20