2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Noninfective Enteritis And Colitis 555-558 > ICD-9-CM Diagnosis 558 Other and unspecified noninfectious gastroenteritis and colitis 558 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 558.1 Gastroenteritis and colitis due to radiation 558.1 is a specific code that can be used to specify a diagnosis 558.1 contains 3 index entries ICD-9-CM Diagnosis 558.2 Toxic gastroenteritis and colitis 558.2 is a specific code that can be used to specify a diagnosis 558.2 contains 10 index entries ICD-9-CM Diagnosis 558.3 Allergic gastroenteritis and colitis 558.3 is a specific code that can be used to specify a diagnosis 558.3 contains 7 index entries ICD-9-CM Diagnosis 558.9 Other and unspecified noninfectious gastroenteritis and colitis 558.9 is a specific code that can be used to specify a diagnosis 558.9 contains 24 index entries