009 Ill-defined intestinal infections 
009.0 Infectious colitis enteritis and gastroenteritis convert 009.0 to ICD-10-CM 009.1 Colitis enteritis and gastroenteritis of presumed infectious origin convert 009.1 to ICD-10-CM 009.2 Infectious diarrhea convert 009.2 to ICD-10-CM
009.3 Diarrhea of presumed infectious origin convert 009.3 to ICD-10-CM