ICD-10 Code D13.2 – Benign neoplasm of duodenum (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D13.2 – Benign neoplasm of duodenum
What it is
D13.2 identifies a noncancerous growth arising in the duodenum, the first part of the small intestine. Use it when documentation states a benign duodenal tumor or polyp and no malignant behavior is described.
Clinical signs
Clinical features vary; refer to documentation. Patients may have no symptoms, or they may present with nonspecific gastrointestinal complaints, bleeding, anemia, obstruction, or an incidental endoscopic finding.
When to use this code
Use D13.2 when the provider documents a benign neoplasm of the duodenum, including a benign polyp or mass confirmed as nonmalignant. It is also appropriate when pathology or endoscopy supports a benign duodenal lesion. If the record is unclear about behavior, check documentation before coding.
Do not use for
Do not use this code for malignant duodenal tumors, carcinoma in situ, or lesions documented as uncertain behavior. If the finding is inflammatory, ulcerative, or otherwise non-neoplastic, choose the code that matches the documented condition.
Coding tip
Verify the anatomic site and pathology wording, because duodenal lesions are often described broadly and may not be benign.