ICD-10 Code D41.2 – Neoplasm of uncertain behavior of ureter (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D41.2 – Neoplasm of uncertain behavior of ureter
What it is
D41.2 identifies a ureteral neoplasm whose behavior cannot be determined from the available pathology or clinical information. Use it when the record indicates uncertain biologic behavior, not clearly benign or malignant.
Clinical signs
Clinical features vary; refer to documentation. Ureteral tumors may be found during evaluation of hematuria, flank pain, hydronephrosis, or imaging abnormalities, but the code depends on the documented uncertain behavior.
When to use this code
Use D41.2 when the provider documents a neoplasm of the ureter with uncertain behavior, borderline features, or indeterminate pathology. It also fits cases where the lesion is described as “cannot be classified” and no malignant diagnosis is confirmed. Check documentation if the site or behavior is unclear.
Do not use for
Do not use this code for confirmed malignant ureteral cancer, benign ureteral tumors, or inflammatory ureteral disease. If the chart does not specify uncertain behavior, check documentation before coding.
Coding tip
Code the ureter site and uncertain behavior exactly as documented, and query the provider if pathology or later notes change the diagnosis.