Is N13.6 a billable ICD-10-CM code?

Yes. N13.6 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does N13.6 sit in the tabular list?

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

N13.6

N13.6 — Pyonephrosis

Billable / specific codeICD-10-CM

N13.6 is a billable, specific ICD-10-CM code for pyonephrosis. It is valid for submission on a claim.

Use additional code

Add a secondary code to capture the detail described below.

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

Inclusion terms

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

Conditions in N13.0-N13.5 with infection
Obstructive uropathy with infection

Other codes that can never be billed with N13.6

These codes carry an Excludes1 note pointing at N13.6. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading N13.6 alone.

M72.8Other fibroblastic disorders
N13.1Hydronephrosis with ureteral stricture, not elsewhere classified
N13.2Hydronephrosis with renal and ureteral calculous obstruction
N13.3Other and unspecified hydronephrosis
N13.4Hydroureter
N13.5Crossing vessel and stricture of ureter without hydronephrosis
N39.0Urinary tract infection, site not specified

Risk adjustment

N13.6 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

N13.6 is named in 1 Medicare coverage policy — 1 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

How N13.6 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 N13.6.

Hydropyonephrosis
Pyohydronephrosis
Pyonephrosis
Hydroureter›with infection
Ormond's disease›with infection
Angulation›ureter›with infection
Calculus, calculi, calculous›pyelitis›with hydronephrosis
Calculus, calculi, calculous›pyelonephritis›with hydronephrosis
Constriction›ureter›with infection
Contraction, contracture, contracted›ureterovesical orifice›with infection
Fasciitis›perirenal›with infection
Fibrosis, fibrotic›retroperitoneal›with infection

Related codes at this level

Codes that share N13. If N13.6 is not quite right, the correct code is usually one of these.

Questions about N13.6

Is N13.6 a billable ICD-10-CM code?: Yes. N13.6 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does N13.6 sit in the tabular list?: Diseases of the genitourinary system (N00-N99), in the block Renal tubulo-interstitial diseases (N10-N16).