N33
✓ Billable
Bladder disorders in diseases classified elsewhere
ICD-10-CM · FY2026 · Diseases of the Genitourinary System
Code
N33
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Genitourinary System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Excludes1 — never code 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)
Frequently asked questions
What is ICD-10 code N33?
ICD-10-CM code N33 represents Bladder disorders in diseases classified elsewhere. It is a billable diagnosis code in the Diseases of the Genitourinary System chapter, effective October 1, 2025 – September 30, 2026.
Is N33 billable?
Yes. N33 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is N33 in?
N33 belongs to the Diseases of the Genitourinary System chapter (N00–N99) of ICD-10-CM.
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