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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Noninfective Enteritis And Colitis 555-558 > Ulcerative Enterocolitis 556.* > 2007 ICD-9-CM Diagnosis 556.5 Left-sided ulcerative (chronic) colitis  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 Therefore, this code may be out of date.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 556.5 can be accessed here. 556.5 is a specific code that can be used to specify a diagnosis 556.5 contains 1 index entry View the ICD-9-CM Volume 1 556.* hierarchy Index entries containing 556.5: Colitis (acute) (catarrhal) (croupous) (cystica superficialis) (exudative) (hemorrhagic) (noninfectious) (phlegmonous) (presumed noninfectious) 558.9 ulcerative (chronic) (idiopathic) (nonspecific) 556.9 left-sided 556.5