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N30

⚠ Non-billable (Header)

Cystitis

Diseases of the genitourinary system (N00-N99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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📋 Code Instructions

  • • code to identify infectious agent (B95-B97)

❌ Excludes1

direct

Cannot be coded with N30

  • • prostatocystitis (N41.3)

Child Codes (7)

N30.0Acute cystitisN30.1Interstitial cystitis (chronic)N30.2Other chronic cystitisN30.3TrigonitisN30.4Irradiation cystitisN30.8Other cystitisN30.9Cystitis, unspecified

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Code Information

CodeN30
BillableNo — Header code
CategoryDiseases of the genitourinary system (N00-N99)
Excludes11 rule(s)
Excludes20 note(s)
Child codes7

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)