Is N13.2 a billable ICD-10-CM code?

Yes. N13.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does N13.2 sit in the tabular list?

Diseases of the genitourinary system (N00-N99), in the block Renal tubulo-interstitial diseases (N10-N16).

What cannot be coded together with N13.2?

N13.2 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

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.

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)

Other codes that can never be billed with N13.2

These codes carry an Excludes1 note pointing at N13.2. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading N13.2 alone.

N20Calculus of kidney and ureter

Risk adjustment

N13.2 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

N13.2 is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

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

How N13.2 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to N13.2.

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

Related codes at this level

Codes that share N13. If N13.2 is not quite right, the correct code is usually one of these.

Questions about N13.2

Is N13.2 a billable ICD-10-CM code?: Yes. N13.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does N13.2 sit in the tabular list?: Diseases of the genitourinary system (N00-N99), in the block Renal tubulo-interstitial diseases (N10-N16).
What cannot be coded together with N13.2?: N13.2 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.