ICD-10-CM · Chapter 14 · N00-N99
N30 Cystitis
Excludes 1 (cannot be coded together)
- prostatocystitis (N41.3)
Use Additional Code
- code to identify infectious agent (B95-B97)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| N30..0 | Acute cystitis | No |
| N30..00 | Acute cystitis without hematuria | Yes |
| N30..01 | Acute cystitis with hematuria | Yes |
| N30..1 | Interstitial cystitis (chronic) | No |
| N30..10 | Interstitial cystitis (chronic) without hematuria | Yes |
| N30..11 | Interstitial cystitis (chronic) with hematuria | Yes |
| N30..2 | Other chronic cystitis | No |
| N30..20 | Other chronic cystitis without hematuria | Yes |
| N30..21 | Other chronic cystitis with hematuria | Yes |
| N30..3 | Trigonitis | No |
| N30..30 | Trigonitis without hematuria | Yes |
| N30..31 | Trigonitis with hematuria | Yes |
| N30..4 | Irradiation cystitis | No |
| N30..40 | Irradiation cystitis without hematuria | Yes |
| N30..41 | Irradiation cystitis with hematuria | Yes |
| N30..8 | Other cystitis | No |
| N30..80 | Other cystitis without hematuria | Yes |
| N30..81 | Other cystitis with hematuria | Yes |
| N30..9 | Cystitis, unspecified | No |
| N30..90 | Cystitis, unspecified without hematuria | Yes |
| N30..91 | Cystitis, unspecified with hematuria | Yes |
Last reviewed: September 2026