ICD-10 Code D13.3 – Benign neoplasm of other and unspecified parts of small intestine (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D13.3 – Benign neoplasm of other and unspecified parts of small intestine
What it is
This code identifies a noncancerous tumor in parts of the small intestine not named elsewhere, or when the exact small-intestinal site is not specified. It indicates benign tissue growth rather than malignant disease.
Clinical signs
Clinical features vary; refer to documentation. Patients may have nonspecific abdominal symptoms, incidental imaging findings, or endoscopic/pathology confirmation of a benign small-intestinal mass.
When to use this code
Use D13.3 when the provider documents a benign neoplasm in the jejunum, ileum, or another unspecified small-intestinal location, and no more specific code is available. Support the code with pathology, imaging, or operative documentation when present. If the lesion is described as uncertain or malignant, do not use this code.
Do not use for
Do not use this code for malignant small-intestinal tumors, polyps without a neoplasm diagnosis, or inflammatory lesions. Check documentation if the site is actually duodenum, which has a different code.
Coding tip
Code the most specific small-intestinal site documented, and default to unspecified only when the record does not identify the location.