N13 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Obstructive and reflux uropathy.
Type 2 excludes
Calculus of kidney and ureter without hydronephrosis (N20.-)
Congenital obstructive defects of renal pelvis and ureter (Q62.0-Q62.3)
Hydronephrosis with ureteropelvic junction obstruction (Q62.11)
Obstructive pyelonephritis (N11.1)
Codes
N13.0
Hydronephrosis with ureteropelvic junction obstruction
N13.1
Hydronephrosis with ureteral stricture, not elsewhere classified
N13.2
Hydronephrosis with renal and ureteral calculous obstruction
N13.3
Other and unspecified hydronephrosis
N13.4
Hydroureter
N13.5
Crossing vessel and stricture of ureter without hydronephrosis
N13.6
Pyonephrosis
N13.7
Vesicoureteral-reflux
N13.8
Other obstructive and reflux uropathy
N13.9
Obstructive and reflux uropathy, unspecified
Versions
2026
No changes
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
Code changed
Type 2 excludes
calculus of kidney and ureter without hydronephrosis (N20.-)congenital obstructive defects of renal pelvis and ureter (Q62.0-Q62.3)hydronephrosis with ureteropelvic junction obstruction (Q62.1)obstructive pyelonephritis (N11.1)
- calculus of kidney and ureter without hydronephrosis (N20.-)
- congenital obstructive defects of renal pelvis and ureter (Q62.0-Q62.3)
- hydronephrosis with ureteropelvic junction obstruction (Q62.11)
- obstructive pyelonephritis (N11.1)
2017
No changes
2016
New code