ICD-10 Code K31.7 – Polyp of stomach and duodenum (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K31.7 – Polyp of stomach and duodenum
What it is
K31.7 identifies a polyp in the stomach or duodenum. Use it when documentation states a benign-appearing polyp in either location and no more specific diagnosis is provided.
Clinical signs
Clinical features vary; refer to documentation. These lesions are often found on endoscopy and may be described as incidental, sessile, or pedunculated, with or without bleeding or obstruction.
When to use this code
Use K31.7 when the provider documents a gastric or duodenal polyp and does not specify a more detailed histologic type or malignant behavior. It also fits when the record notes a polyp found during workup or surveillance. If pathology or the note gives a different diagnosis, code that instead.
Do not use for
Do not use this code for malignant neoplasms, inflammatory lesions, or polyps in other GI sites. Check documentation if the lesion is described as a mass, ulcer, or another specific stomach or duodenal condition.
Coding tip
Code from the provider’s final diagnosis and pathology wording, and verify the anatomic site before assigning K31.7.