Hydroureter

This code represents the abnormal dilation of the ureter due to an obstruction that prevents the normal flow of urine from the kidney to the bladder. It indicates a non-infectious, non-congenital, and non-reflux-related accumulation of urine within the ureter, leading to its distension.

Use this code when documentation specifies hydroureter without mention of infection, congenital origin, or vesicoureteral reflux. This typically applies to cases where an acquired obstruction, such as a calculus, stricture, or external compression, is causing the ureteral dilation. Supporting documentation should clearly state "hydroureter" and rule out the excluded conditions.

• Always review the medical record for any mention of infection, congenital anomalies, or vesicoureteral reflux, as these conditions require different codes.
• If an underlying cause for the hydroureter is identified (e.g., ureteral calculus), code the cause first, followed by this code.
• Be mindful of the "Excludes1" notes to avoid incorrect co-coding with related but distinct conditions.