ICD-10-CM > K00-K95 > K50-K52 > K52 K52 Other and unspecified noninfective gastroenteritis and colitis Non-Billable/Non-Specific Codes K52.0Gastroenteritis and colitis due to radiationK52.1Toxic gastroenteritis and colitisK52.2Allergic and dietetic gastroenteritis and colitisK52.21Food protein-induced enterocolitis syndromeK52.22Food protein-induced enteropathyK52.29Other allergic and dietetic gastroenteritis and colitisK52.3Indeterminate colitisK52.8Other specified noninfective gastroenteritis and colitisK52.81Eosinophilic gastritis or gastroenteritisK52.82Eosinophilic colitisK52.83Microscopic colitisK52.831Collagenous colitisK52.832Lymphocytic colitisK52.838Other microscopic colitisK52.839Microscopic colitis, unspecifiedK52.89Other specified noninfective gastroenteritis and colitisK52.9Noninfective gastroenteritis and colitis, unspecified