558 Other and unspecified noninfectious gastroenteritis and colitis 
558.1 Gastroenteritis and colitis due to radiation convert 558.1 to ICD-10-CM 558.2 Toxic gastroenteritis and colitis convert 558.2 to ICD-10-CM 558.3 Allergic gastroenteritis and colitis convert 558.3 to ICD-10-CM 558.4 Eosinophilic gastroenteritis and colitis 
558.41 Eosinophilic gastroenteritis convert 558.41 to ICD-10-CM
558.42 Eosinophilic colitis convert 558.42 to ICD-10-CM 558.9 Other and unspecified noninfectious gastroenteritis and colitis convert 558.9 to ICD-10-CM