ICD-10-CM > N00-N99 > N30-N39 > N30 > N30.0 N30.0 Acute cystitis Non-Billable/Non-Specific Type 1 Excludes irradiation cystitis (N30.4-)trigonitis (N30.3-) Codes N30.00Acute cystitis without hematuriaN30.01Acute cystitis with hematuria