Other obstructive defects of renal pelvis and ureter

This code signifies various congenital or acquired obstructions affecting the flow of urine from the renal pelvis into the ureter, or within the ureter itself, that are not otherwise specified. These defects impede normal urinary drainage, potentially leading to hydronephrosis, infection, or renal damage.

Use this code when documentation indicates an obstructive anomaly of the renal pelvis or ureter, such as ureteropelvic junction (UPJ) obstruction, ureterovesical junction (UVJ) obstruction, or other ureteral strictures, that does not have a more specific ICD-10-CM code. This code is appropriate when the specific type of obstruction is not clearly defined or falls outside more granular codes.

• Ensure the documentation specifies an obstructive defect and not merely an anatomical variation.
• Distinguish from acquired strictures (e.g., N13.5, N13.6) if the etiology is clearly non-congenital.
• Code any associated hydronephrosis (e.g., N13.0-N13.3) as a secondary diagnosis.