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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Infectious And Parasitic Diseases 001-139 > Intestinal Infectious Diseases 001-009 > Ill-Defined Intestinal Infections 009.* > 2007 ICD-9-CM Diagnosis 009.1 Colitis enteritis and gastroenteritis of presumed infectious origin  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 Therefore, this code may be out of date.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 009.1 can be accessed here. 009.1 is a specific code that can be used to specify a diagnosis 009.1 contains 3 index entries View the ICD-9-CM Volume 1 009.* hierarchy 009.1 excludes: colitis NOS (558.9) enteritis NOS (558.9) gastroenteritis NOS (558.9) Index entries containing 009.1: Colitis (acute) (catarrhal) (croupous) (cystica superficialis) (exudative) (hemorrhagic) (noninfectious) (phlegmonous) (presumed noninfectious) 558.9 infectious (see also Enteritis, due to, specific organism) 009.0 presumed 009.1 Enteritis (acute) (catarrhal) (choleraic) (chronic) (congestive) (diarrheal) (exudative) (follicular) (hemorrhagic) (infantile) (lienteric) (noninfectious) (perforative) (phlegmonous) (presumed noninfectious) (pseudomembranous) 558.9 infectious NEC (see also Enteritis, due to, by organism) 009.0 presumed 009.1 Gastroenteritis (acute) (catarrhal) (congestive) (hemorrhagic) (noninfectious) (see also Enteritis) 558.9 infectious (see also Enteritis, due to, by organism) 009.0 presumed 009.1