MCMedicalCodingSoftware
N30.9

N30.9: Cystitis, unspecified

Non-billable headerICD-10-CM

N30.9 is a non-billable header ICD-10-CM code for cystitis, unspecified. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above N30.9

A category’s note binds every code beneath it.

Written on N30: Cystitis

Other codes that can never be billed with N30.9

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

  • N39.0Urinary tract infection, site not specified

Risk adjustment

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

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead N30.9

2 child codes. Green means billable.

Other codes under N30

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.