ICD-10 Code B57.32 – Megacolon in Chagas’ Disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B57.32 – Megacolon in Chagas’ disease
What it is
B57.32 identifies megacolon caused by Chagas disease, a chronic complication of Trypanosoma cruzi infection. Use it when the record shows colonic dilation or severe motility loss linked to Chagas disease.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include chronic constipation, abdominal distention, and evidence of enlarged colon or impaired bowel motility in a patient with known Chagas disease.
When to use this code
Use this code when the provider documents megacolon as a manifestation of Chagas disease. It may appear in chronic cases with imaging, surgical, or specialist notes describing colonic enlargement and the underlying parasitic infection.
Code the condition only when the relationship to Chagas disease is stated or clearly established in the record. Check documentation if the note mentions megacolon without linking it to Chagas disease.
Do not use for
Do not use B57.32 for megacolon from other causes, such as idiopathic or obstructive colonic dilation. Do not assume Chagas-related disease without documentation.
Coding tip
Confirm both the megacolon diagnosis and the Chagas disease connection in the chart before assigning B57.32.