Eosinophilic colitis

This code represents eosinophilic colitis, a chronic inflammatory condition of the large intestine characterized by an abnormal accumulation of eosinophils in the colonic mucosa. It is a form of eosinophilic gastrointestinal disorder (EGID) primarily affecting the colon, leading to symptoms such as abdominal pain, diarrhea, and rectal bleeding.

Use this code when documentation specifies eosinophilic colitis as the patient's diagnosis, confirmed by biopsy showing significant eosinophilic infiltration of the colonic tissue. This diagnosis is typically made after excluding other causes of colitis, such as infectious or inflammatory bowel disease.

• Differentiate from other eosinophilic GI disorders; ensure the documentation specifically states "colitis."
• Review the "Excludes2" notes carefully to avoid miscoding allergic or food-induced proctocolitis, which have distinct codes.
• Confirm that the provider's documentation supports the diagnosis, often including pathology reports.