ICD-10 Code D13.9 – Benign neoplasm of ill-defined sites within the digestive system (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D13.9 – Benign neoplasm of ill-defined sites within the digestive system
What it is
D13.9 identifies a noncancerous tumor in a digestive system site that is not more specifically named in the record. Use it when the documentation confirms a benign neoplasm, but the exact digestive location is unclear or not specified.
Clinical signs
Clinical features vary; refer to documentation. Benign digestive neoplasms may be found incidentally, or they may be associated with localized symptoms depending on size and site.
When to use this code
Use this code when the provider documents a benign neoplasm involving an ill-defined or unspecified digestive site, and no more specific site is available. It fits pathology, endoscopy, or imaging reports that confirm benign behavior without naming the exact organ. If a specific digestive location is documented, code that site instead.
Do not use for
Do not use D13.9 for malignant, in situ, or uncertain-behavior tumors. Also avoid it when the record identifies a more specific benign digestive site code.
Coding tip
Query for the exact digestive site whenever the documentation is vague, because a more specific code may apply.