N13.1
BillableHydronephrosis with ureteral stricture, not elsewhere classified
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Swelling of the kidney due to urine backup caused by a narrowing (stricture) in the ureter, the tube that carries urine from the kidney to the bladder.
Coding Tips
- •Verify documentation specifies ureteral stricture as the cause of hydronephrosis
- •Confirm this is not elsewhere classified before assigning; check for more specific codes related to stricture etiology
Excludes 1 — Do NOT code together
- Hydronephrosis with ureteral stricture with infection (N13.6)
Code Hierarchy
└N13Obstructive and reflux uropathy└N13.1Hydronephrosis with ureteral stricture, not elsewhere classified
└N13.1Hydronephrosis with ureteral stricture, not elsewhere classified