ICD-10 Code K52.82 – Eosinophilic Colitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K52.82 – Eosinophilic colitis
What it is
K52.82 identifies eosinophilic colitis, an inflammatory condition in which eosinophils are present in the colon. Use it when documentation specifically names this diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings include abdominal pain, diarrhea, and sometimes rectal bleeding or weight loss, with confirmation based on clinical evaluation and pathology.
When to use this code
Use K52.82 when the provider documents eosinophilic colitis as the final diagnosis, whether newly diagnosed or established. It may also fit when pathology or specialist notes clearly support colonic eosinophilic inflammation and the record links the finding to this condition.
Do not use for
Do not use this code for nonspecific colitis, eosinophilia without colonic involvement, or suspected disease not confirmed in the record. Check documentation if the note only describes symptoms or an unspecified inflammatory bowel condition.
Coding tip
Code K52.82 only when the chart explicitly supports eosinophilic colitis; otherwise, query for clarification.