ICD-10 Code K31.82 – Dieulafoy lesion (hemorrhagic) of stomach and duodenum (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K31.82 – Dieulafoy lesion (hemorrhagic) of stomach and duodenum
What it is
K31.82 identifies a bleeding Dieulafoy lesion in the stomach or duodenum. It refers to an abnormally large arterial vessel near the mucosal surface that can erode and cause significant gastrointestinal hemorrhage.
Clinical signs
Patients often present with upper gastrointestinal bleeding, such as hematemesis, melena, or unexplained anemia. Endoscopy may show a small mucosal defect with active bleeding or a visible vessel; clinical features vary, refer to documentation.
When to use this code
Use K31.82 when the provider documents a Dieulafoy lesion in the stomach or duodenum with hemorrhage. It is appropriate when endoscopic or operative findings confirm the bleeding source. If the site or bleeding status is unclear, check documentation before coding.
Do not use for
Do not use this code for nonbleeding Dieulafoy lesions or for gastric or duodenal bleeding from another documented cause. If the record only says gastrointestinal hemorrhage without a confirmed Dieulafoy lesion, this code is not supported.
Coding tip
Code K31.82 only when the documentation links the bleeding to a Dieulafoy lesion; otherwise, query for clarification.