ICD-10-CM
ICD-10 code for Cystitis: N30.90
The ICD-10-CM index points "Cystitis" to N30.90, Cystitis, unspecified without hematuria. N30.90 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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Index subterms
A header groups codes and is not billed. A billable code is one you can report.
- N30.00acute, Acute cystitis without hematuriaBillable
- A06.81amebic, Amebic cystitisBillable
- B65.9bilharzial, Schistosomiasis, unspecified, and N33 for the manifestationBillable
- A54.01blennorrhagic (gonococcal), Gonococcal cystitis and urethritis, unspecifiedBillable
- N21.0calculous, Calculus in bladderBillable
- A56.01chlamydial, Chlamydial cystitis and urethritisBillable
- N30.20chronic, Other chronic cystitis without hematuriaBillable
- A36.85diphtheritic, Diphtheritic cystitisBillable
- A54.01gonococcal, Gonococcal cystitis and urethritis, unspecifiedBillable
- N30.40irradiation, Irradiation cystitis without hematuriaBillable
- N30.30of trigone, Trigonitis without hematuriaBillable
- N41.3prostatic, ProstatocystitisBillable
- O86.22puerperal (postpartum), Infection of bladder following deliveryBillable
- N30.80specified type NEC, Other cystitis without hematuriaBillable
- A52.76syphilitic (late), Other genitourinary symptomatic late syphilisBillable
- A59.03trichomonal, Trichomonal cystitis and urethritisBillable
- A18.12tuberculous, Tuberculosis of bladderBillable
More specific codes in N30
A header groups codes and is not billed. A billable code is one you can report.
- N30CystitisHeader
- N30.0Acute cystitisHeader
- N30.00Acute cystitis without hematuriaBillable
- N30.01Acute cystitis with hematuriaBillable
- N30.1Interstitial cystitis (chronic)Header
- N30.10Interstitial cystitis (chronic) without hematuriaBillable
- N30.11Interstitial cystitis (chronic) with hematuriaBillable
- N30.2Other chronic cystitisHeader
- N30.20Other chronic cystitis without hematuriaBillable
- N30.21Other chronic cystitis with hematuriaBillable
- N30.3TrigonitisHeader
- N30.30Trigonitis without hematuriaBillable
- N30.31Trigonitis with hematuriaBillable
- N30.4Irradiation cystitisHeader
- N30.40Irradiation cystitis without hematuriaBillable
- N30.41Irradiation cystitis with hematuriaBillable
- N30.8Other cystitisHeader
- N30.80Other cystitis without hematuriaBillable
- N30.81Other cystitis with hematuriaBillable
- N30.9Cystitis, unspecifiedHeader
- N30.90Cystitis, unspecified without hematuriaBillable
- N30.91Cystitis, unspecified with hematuriaBillable
Use additional code
The CDC tabular list says to add the code named here after this one when it applies.
From N30. A note on a category applies to every code under it.
Use additional code to identify infectious agent (B95-B97)
Excludes1
Excludes1 means these codes are not reported together.
From N30. A note on a category applies to every code under it.
Related conditions
Related pages
- N30.90 code detailsNotes, nearby codes, CMS-HCC group
- Category N30Every code under it
- Chapter 14Diseases of the genitourinary system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Cystitis?
The ICD-10-CM index points "Cystitis" to N30.90, Cystitis, unspecified without hematuria. N30.90 is a billable code.
Is N30.90 billable?
Yes. N30.90 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to N30.90?
The CDC tabular list gives 1 Excludes1 note (not coded together), 1 "use additional code" note for N30.90 and the categories above it. They are listed on this page.
What chapter is N30.90 in?
Chapter 14. Diseases of the genitourinary system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.