ICD-10 Code K29.91 – Gastroduodenitis, unspecified, with bleeding (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K29.91 – Gastroduodenitis, unspecified, with bleeding
What it is
K29.91 identifies inflammation of the stomach and duodenum when the site is not further specified and bleeding is present. Use it when the record supports gastroduodenitis with hemorrhage, but not a more exact subtype.
Clinical signs
Typical findings may include upper abdominal pain, nausea, vomiting, or evidence of gastrointestinal bleeding such as hematemesis or melena. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents gastroduodenitis, unspecified, and clearly links it to bleeding. It fits inpatient, outpatient, or emergency records when the diagnosis is confirmed but the exact cause or acute/chronic detail is not stated.
Choose the code only when bleeding is part of the documented condition, not merely a suspected symptom. If the chart names a more specific gastritis, duodenitis, ulcer, or another bleeding source, code that condition instead.
Do not use for
Do not use K29.91 for gastroduodenitis without bleeding, for isolated gastritis or duodenitis, or when bleeding comes from a different GI lesion. Check documentation.
Coding tip
Confirm that both “unspecified” gastroduodenitis and bleeding are documented together before assigning K29.91.