ICD-10-CM > N00-N99 > N30-N39 > N30 N30 Cystitis Non-Billable/Non-Specific Use Additional code to identify infectious agent (B95-B97) Type 1 Excludes prostatocystitis (N41.3) Codes N30.0Acute cystitisN30.00Acute cystitis without hematuriaN30.01Acute cystitis with hematuriaN30.1Interstitial cystitis (chronic)N30.10Interstitial cystitis (chronic) without hematuriaN30.11Interstitial cystitis (chronic) with hematuriaN30.2Other chronic cystitisN30.20Other chronic cystitis without hematuriaN30.21Other chronic cystitis with hematuriaN30.3TrigonitisN30.30Trigonitis without hematuriaN30.31Trigonitis with hematuriaN30.4Irradiation cystitisN30.40Irradiation cystitis without hematuriaN30.41Irradiation cystitis with hematuriaN30.8Other cystitisN30.80Other cystitis without hematuriaN30.81Other cystitis with hematuriaN30.9Cystitis, unspecifiedN30.90Cystitis, unspecified without hematuriaN30.91Cystitis, unspecified with hematuria