ICD-10 Code K31.2 – Hourglass stricture and stenosis of stomach (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K31.2 – Hourglass stricture and stenosis of stomach
What it is
K31.2 identifies an hourglass narrowing or stenosis of the stomach, where the gastric lumen is constricted into two connected parts. Use it when documentation clearly describes this specific structural stomach abnormality.
Clinical signs
Clinical features may include upper abdominal discomfort, early satiety, vomiting, or evidence of gastric outlet-related obstruction. Clinical features vary; refer to documentation.
When to use this code
Use K31.2 when the provider documents hourglass stricture, hourglass stenosis, or an equivalent description of a narrowed stomach. It is appropriate when imaging, endoscopy, or operative findings confirm this anatomic change. Check documentation if the record only says “gastric stricture” without the hourglass pattern.
Do not use for
Do not use this code for esophageal, pyloric, or intestinal strictures, or for nonspecific abdominal pain alone. If the stomach narrowing is not documented as hourglass-type, check documentation.
Coding tip
Code the condition only when the hourglass configuration is explicitly stated in the record.