Is N30 a billable code?
No. N30 is a header code that groups 14 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
N30: Cystitis
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
N30 groups related diagnoses under cystitis. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under N30
- N30.00Acute cystitis without hematuria
- N30.01Acute cystitis with hematuria
- N30.10Interstitial cystitis (chronic) without hematuria
- N30.11Interstitial cystitis (chronic) with hematuria
- N30.20Other chronic cystitis without hematuria
- N30.21Other chronic cystitis with hematuria
- N30.30Trigonitis without hematuria
- N30.31Trigonitis with hematuria
- N30.40Irradiation cystitis without hematuria
- N30.41Irradiation cystitis with hematuria
- N30.80Other cystitis without hematuria
- N30.81Other cystitis with hematuria
- N30.90Cystitis, unspecified without hematuria
- N30.91Cystitis, unspecified with hematuria
N30 questions
What does N30 mean?
N30 is the ICD-10-CM code for Cystitis. It is in chapter 14, Diseases of the genitourinary system (N00-N99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.