ICD-10-CM · Chapter 14 · N00-N99
N33 Bladder disorders in diseases classified elsewhere
Excludes 1 (cannot be coded together)
- bladder disorder in syphilis (A52.76)
- bladder disorder in tuberculosis (A18.12)
- candidal cystitis (B37.41)
- chlamydial cystitis (A56.01)
- cystitis in gonorrhea (A54.01)
- cystitis in neurogenic bladder (N31.-)
- diphtheritic cystitis (A36.85)
- syphilitic cystitis (A52.76)
- trichomonal cystitis (A59.03)
Code First
- underlying disease, such as:
- schistosomiasis (B65.0-B65.9)
This category is a complete, billable diagnosis code.
No additional specificity is required — submit N33 directly on claims and documentation without a subcode extension.
Last reviewed: September 2026