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N13.0

✓ Billable

Hydronephrosis with ureteropelvic junction obstruction

Diseases of the genitourinary system (N00-N99)

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Also Known As

Hydronephrosis due to acquired occlusion of ureteropelvic junction

⚠️ Excludes2

direct

May be coded together if both conditions coexist

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

⚠️ Excludes2

inherited from N13

Rules from parent category N13: Obstructive and reflux uropathy

  • • 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)

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Code Information

CodeN13.0
BillableYes
ParentN13
CategoryDiseases of the genitourinary system (N00-N99)
Excludes10 rule(s)
Excludes25 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)