ICD-10 Code D13.39 – Benign neoplasm of other parts of small intestine (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D13.39 – Benign neoplasm of other parts of small intestine
What it is
D13.39 identifies a noncancerous tumor in parts of the small intestine other than the duodenum, jejunum, or ileum specifically named elsewhere. Use it when the record documents a benign intestinal neoplasm without malignant behavior.
Clinical signs
Clinical features vary; refer to documentation. Benign small-intestine tumors may be found incidentally or after evaluation for abdominal pain, bleeding, obstruction, or anemia, but the diagnosis should be supported by imaging, endoscopy, or pathology.
When to use this code
Use this code when the provider documents a benign neoplasm in an unspecified or other part of the small intestine and the site is not better captured by a more specific code. It also fits confirmed benign pathology after biopsy or resection. If the note only says “small intestinal mass,” check documentation before assigning D13.39.
Do not use for
Do not use this code for malignant neoplasms, carcinoid tumors, or inflammatory, infectious, or hyperplastic lesions. If the lesion is in the duodenum, jejunum, or ileum and a more specific code is documented, code that site instead.
Coding tip
Verify the exact anatomic site and benign behavior in the pathology or operative report before coding D13.39.