ICD-10 Code D37.2 – Neoplasm of uncertain behavior of small intestine (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D37.2 – Neoplasm of uncertain behavior of small intestine
What it is
D37.2 identifies a small intestine neoplasm whose behavior is uncertain at the time of diagnosis. Use it when pathology or clinical documentation does not clearly show whether the growth is benign or malignant.
Clinical signs
Clinical features vary; refer to documentation. Patients may have an incidental mass, abdominal pain, bleeding, obstruction, or nonspecific gastrointestinal symptoms, but the code is based on the documented uncertain behavior, not symptoms alone.
When to use this code
Use D37.2 when the provider documents a neoplasm of the small intestine with uncertain, borderline, or indeterminate behavior. It also fits cases where pathology confirms a tumor but does not establish benign or malignant status. If the record is unclear, check documentation before coding.
Do not use for
Do not use this code for clearly benign small intestine tumors or for malignant neoplasms of the small intestine. If the diagnosis is only a symptom, such as abdominal pain or bleeding, code the documented symptom instead.
Coding tip
Code from the provider’s final documented behavior of the neoplasm, and query if the pathology report leaves the diagnosis uncertain.