N13.2

N13.2: Hydronephrosis with renal and ureteral calculous obstruction

Billable / specific codeICD-10-CM

N13.2 is a billable, specific ICD-10-CM code for hydronephrosis with renal and ureteral calculous obstruction. It is valid for submission on a claim.

Check N13.2 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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

Excludes2 inherited from the categories above N13.2

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 N13.2

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

N11.1Chronic obstructive pyelonephritis
N20Calculus of kidney and ureter

Risk adjustment

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

Medicare coverage

N13.2 is named in 4 Medicare coverage policies: 4 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A55336Billing and Coding: Retroperitoneal Ultrasound
A56421Billing and Coding: CT of the Abdomen and Pelvis
A56802Billing and Coding: Urodynamics
A57455Billing and Coding: Urodynamics

Alphabetic index entries that lead here

Calculus, calculi, calculous›ureter›with hydronephrosis
Calculus, calculi, calculous›urinary›with hydronephrosis
Calculus, calculi, calculous›kidney›congenital›with hydronephrosis
Calculus, calculi, calculous›kidney›with calculus, ureter›with hydronephrosis
Calculus, calculi, calculous›ureter›with calculus, kidney›with hydronephrosis
Hydronephrosis NEC›with›obstruction›renal calculus
Ureteritis›due to calculus›with calculus, kidney›with hydronephrosis
Hydronephrosis NEC›with›obstruction›ureteral NEC›calculus

Code history

Unchanged in every release from FY2024 to FY2027.