ICD-10 Code K57.11 – Diverticulosis of small intestine without perforation or abscess with bleeding (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K57.11 – Diverticulosis of small intestine without perforation or abscess with bleeding
What it is
K57.11 identifies diverticulosis in the small intestine when there is bleeding, but no perforation or abscess. Use it when the record shows small-bowel diverticula with hemorrhage.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may describe gastrointestinal bleeding, such as melena or hematochezia, with evidence of small-intestinal diverticula and no perforation or abscess.
When to use this code
Use this code when the provider documents diverticulosis of the small intestine and bleeding is attributed to that condition. It fits encounters where imaging, endoscopy, or operative notes support the diagnosis. Check documentation if the bleeding source is uncertain or another lesion is identified.
Do not use for
Do not use K57.11 for diverticulosis without bleeding, or when perforation, abscess, or a different intestinal site is documented. If the record does not clearly link bleeding to small-intestinal diverticulosis, check documentation.
Coding tip
Confirm both the anatomic site and the bleeding complication before assigning K57.11.