ICD-10 Code K29.90 – Gastroduodenitis, unspecified, without bleeding (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K29.90 – Gastroduodenitis, unspecified, without bleeding
What it is
K29.90 identifies inflammation of both the stomach and duodenum when the type is not specified and there is no documented bleeding. Use it when the record confirms gastroduodenitis but does not name a more specific form.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings may include upper abdominal discomfort, nausea, indigestion, or endoscopic evidence of inflammation without bleeding.
When to use this code
Use K29.90 when the provider documents gastroduodenitis and does not specify whether it is acute, chronic, erosive, or another subtype. It also fits when the condition is described as unspecified and no bleeding is mentioned in the record.
Choose this code only when documentation supports inflammation involving both the stomach and duodenum. If the note identifies a different gastritis, duodenitis, or a bleeding complication, check documentation and code more specifically.
Do not use for
Do not use K29.90 for gastroduodenitis with bleeding or for cases where the provider names a more specific diagnosis. If the condition is limited to the stomach or duodenum alone, this code is not appropriate.
Coding tip
Query for acuity, bleeding, and exact site if the note only says “gastroduodenitis” or is otherwise unclear.