ICD-10 N33
Billable / SpecificBladder disorders in diseases classified elsewhere
About ICD-10-CM N33
ICD-10-CM code N33 represents Bladder disorders in diseases classified elsewhere. This is a billable/specific code in the Genitourinary System chapter (block N33). The 2026 edition of ICD-10-CM N33 became effective on October 1, 2025.
Type 1 Excludes
Pure excludes, these codes can never be coded together with N33. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- 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)
Coding Notes
Code First
- underlying disease, such as:
- schistosomiasis (B65.0-B65.9)
Medicare LCD Coverage for N33
Local Coverage Determinations (LCDs) from CMS MACs that list N33 as a covered diagnosis.
Showing top 9. Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing N33.
1 Cigna
1 Medicare
CPT Codes Commonly Billed with N33
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert N33 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| N33 | 59689 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To N33
Other codes in section N30-N39 (Other diseases of the urinary system).
ICD-10 N33, Billing FAQ
Is ICD-10 code N33 billable? +
Yes, N33 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What codes are Type 1 Excludes for N33? +
Type 1 Excludes (never code together with N33): bladder disorder in syphilis (A52.76); bladder disorder in tuberculosis (A18.12); candidal cystitis (B37.41)
What ICD-9 codes does N33 map to? +
Per CMS GEMs, N33 maps to ICD-9 codes: 59689. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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