N13.0

N13.0: Hydronephrosis with ureteropelvic junction obstruction

Billable / specific codeICD-10-CM

N13.0 is a billable, specific ICD-10-CM code for hydronephrosis with ureteropelvic junction obstruction. It is valid for submission on a claim.

Check N13.0 with the rest of the claim: free scrubber

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

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

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Hydronephrosis due to acquired occlusion of ureteropelvic junction

Excludes2 inherited from the categories above N13.0

Not part of this code, but both may be coded when both are present.

Written on 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)

Other codes that can never be billed with N13.0

Their own Excludes1 notes name this code, so the conflict is not listed above.

N11.1Chronic obstructive pyelonephritis

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

N13.0 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A55336Billing and Coding: Retroperitoneal Ultrasound
A57455Billing and Coding: Urodynamics

Alphabetic index entries that lead here

Hydronephrosis NEC›congenital›due to acquired occlusion of ureteropelvic junction
Obstruction, obstructed, obstructive›pelviureteral junction›with hydronephrosis
Stricture›pelviureteric junction›acquired, with hydronephrosis
Stricture›ureteropelvic junction›acquired, with hydronephrosis
Hydronephrosis NEC›with›obstruction›ureteropelvic junction›acquired

Code history

Unchanged in every release from FY2024 to FY2027.