ICD-10 Code K28.5 – Chronic or unspecified gastrojejunal ulcer with perforation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K28.5 – Chronic or unspecified gastrojejunal ulcer with perforation
What it is
This code identifies a gastrojejunal ulcer that is chronic or not further specified and has perforated. It means the ulcer has created a hole through the stomach or jejunal wall at the gastrojejunal anastomosis.
Clinical signs
Clinical features vary; refer to documentation. Perforation may present with sudden abdominal pain, guarding, or signs of peritonitis, along with a documented gastrojejunal ulcer.
When to use this code
Use K28.5 when the record clearly states a chronic or unspecified gastrojejunal ulcer with perforation. This applies to ulcers at a gastrojejunal anastomosis, including post-surgical sites, when perforation is documented. If the note identifies the ulcer as acute or another type, check documentation before coding.
Do not use for
Do not use this code for gastrojejunal ulcers without perforation or for ulcers at other GI locations. Do not assign it when the documentation only mentions bleeding, obstruction, or marginal ulcer without perforation.
Coding tip
Confirm both the ulcer location and the perforation in the provider note before assigning K28.5.