ICD-10 Code K57.3 – Diverticular disease of large intestine without perforation or abscess (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K57.3 – Diverticular disease of large intestine without perforation or abscess
What it is
K57.3 identifies diverticular disease affecting the large intestine when there is no perforation or abscess. It describes uncomplicated diverticulosis or diverticular disease documented in the colon or large bowel.
Clinical signs
Clinical features vary; refer to documentation. Patients may have left lower abdominal discomfort, bowel habit changes, or no symptoms at all. Imaging or colonoscopy may show diverticula without signs of perforation or abscess.
When to use this code
Use K57.3 when the provider documents diverticular disease of the large intestine and specifically states there is no perforation or abscess. It also fits uncomplicated diverticular disease of the colon when no acute complication is reported. If the record is unclear, check documentation before coding.
Do not use for
Do not use this code if perforation, abscess, or another complication is documented. Do not assign it when the record describes diverticular disease of a different site or a more specific diverticulitis code applies.
Coding tip
Code the documented complication status first; uncomplicated disease is K57.3 only when perforation and abscess are explicitly absent.