ICD-10 Code D41.9 – Neoplasm of uncertain behavior of unspecified urinary organ (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D41.9 – Neoplasm of uncertain behavior of unspecified urinary organ
What it is
This code identifies a growth in a urinary organ whose behavior is uncertain, meaning it is not clearly benign or malignant. Use it when the record does not specify the exact urinary organ involved.
Clinical signs
Clinical features vary; refer to documentation. Patients may have a mass, hematuria, pain, or findings on imaging or cystoscopy that suggest a neoplasm, but the pathology does not confirm malignant behavior.
When to use this code
Use D41.9 when the provider documents an uncertain neoplasm of a urinary organ but does not name the specific site, such as kidney, bladder, or ureter. It also fits when the record confirms uncertain behavior but the organ is not further identified. Check documentation if the pathology or imaging report later clarifies the site or behavior.
Do not use for
Do not use this code for clearly benign or malignant urinary tumors. Do not assign it when the specific urinary organ is documented and a more precise code is available.
Coding tip
Query for the exact urinary organ and behavior before defaulting to D41.9.