ICD-10-CM N13: Obstructive and reflux uropathy

ICD-10-CM Diagnosis Code (2025)

Official Description for N13

Obstructive and reflux uropathy

Coding Notes & Guidelines for N13

Excludes1: Not Coded Here

Hydronephrosis with ureteral stricture with infection (N13.6)

Excludes1: Not Coded Here

Hydronephrosis with renal and ureteral calculous obstruction with infection (N13.6)

Excludes1: Not Coded Here

hydronephrosis with infection (N13.6)

Excludes1: Not Coded Here
  • congenital hydroureter (Q62.3-)
  • hydroureter with infection (N13.6)
  • vesicoureteral-reflux with hydroureter (N13.73-)
Excludes1: Not Coded Here

Crossing vessel and stricture of ureter without hydronephrosis with infection (N13.6)

Excludes1: Not Coded Here

reflux-associated pyelonephritis (N11.0)

Excludes2: Not Included Here
  • 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)
Excludes2: Not Included Here

Hydronephrosis with ureteropelvic junction obstruction due to calculus (N13.2)

Code First
  • , if applicable, any causal condition, such as:
  • enlarged prostate (N40.1)
Use Additional Code

code (B95-B97), to identify infectious agent.

Inclusion Terms

Hydronephrosis due to acquired occlusion of ureteropelvic junction

Inclusion Terms

Kinking and stricture of ureter without hydronephrosis

Inclusion Terms
  • Conditions in N13.0-N13.5 with infection
  • Obstructive uropathy with infection
Inclusion Terms

Vesicoureteral-reflux NOS

Inclusion Terms

Urinary tract obstruction due to specified cause

Inclusion Terms

Urinary tract obstruction NOS

Child Codes (More Specific Codes for N13):

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 N13.30 - Unspecified hydronephrosis N13.39 - Other hydronephrosis N13.4 - Hydroureter N13.5 - Crossing vessel and stricture of ureter without hydronephrosis N13.6 - Pyonephrosis N13.7 - Vesicoureteral-reflux N13.70 - Vesicoureteral-reflux, unspecified N13.71 - Vesicoureteral-reflux without reflux nephropathy N13.72 - Vesicoureteral-reflux with reflux nephropathy without hydroureter N13.721 - Vesicoureteral-reflux with reflux nephropathy without hydroureter, unilateral N13.722 - Vesicoureteral-reflux with reflux nephropathy without hydroureter, bilateral N13.729 - Vesicoureteral-reflux with reflux nephropathy without hydroureter, unspecified N13.73 - Vesicoureteral-reflux with reflux nephropathy with hydroureter N13.731 - Vesicoureteral-reflux with reflux nephropathy with hydroureter, unilateral N13.732 - Vesicoureteral-reflux with reflux nephropathy with hydroureter, bilateral N13.739 - Vesicoureteral-reflux with reflux nephropathy with hydroureter, unspecified N13.8 - Other obstructive and reflux uropathy N13.9 - Obstructive and reflux uropathy, unspecified

About ICD-10-CM Code N13 (Obstructive and reflux uropathy)

ICD-10-CM code N13 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM N13 became effective on October 1, 2024.

This page provides detailed information about N13 - Obstructive and reflux uropathy. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Obstructive and reflux uropathy.