Neoplasm of uncertain behavior of right ureter

This code signifies a tumor in the right ureter that cannot definitively be classified as benign or malignant based on current pathological findings. It indicates an abnormal growth with uncertain biological potential, requiring further investigation or monitoring.

Apply this code when pathology reports describe a ureteral neoplasm as "uncertain behavior," "borderline," or "of undetermined malignant potential" specifically located in the right ureter. Documentation must clearly specify the right ureter as the affected site and the uncertain nature of the tumor.

• Ensure the documentation explicitly states "right ureter" and "uncertain behavior"; do not assume laterality or behavior.
• Distinguish carefully from benign neoplasms (D30.41) or malignant neoplasms (C66.1) of the right ureter.
• Review pathology reports thoroughly for definitive classification; if a final diagnosis of benign or malignant is made, use the appropriate code.