Is N30 a billable ICD-10-CM code?

No. N30 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does N30 sit in the tabular list?

Diseases of the genitourinary system (N00-N99), in the block Other diseases of the urinary system (N30-N39).

What cannot be coded together with N30?

N30 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.

N30

N30 — Cystitis

Non-billable headerICD-10-CM

N30 is a non-billable header ICD-10-CM code for cystitis. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

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

prostatocystitis (N41.3)

Use additional code

Add a secondary code to capture the detail described below.

code to identify infectious agent (B95-B97)

Other codes that can never be billed with N30

These codes carry an Excludes1 note pointing at N30. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading N30 alone.

N02Recurrent and persistent hematuria
N30.0Acute cystitis
N32.3Diverticulum of bladder
N39.0Urinary tract infection, site not specified
R31Hematuria

Risk adjustment

N30 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.

Code history

N30 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead N30

7 child codes. Green means billable.

Questions about N30

Is N30 a billable ICD-10-CM code?: No. N30 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does N30 sit in the tabular list?: Diseases of the genitourinary system (N00-N99), in the block Other diseases of the urinary system (N30-N39).
What cannot be coded together with N30?: N30 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.