N30.9 ICD-10-CA code: Cystitis, unspecified
N30.9 is the ICD-10-CA code for “Cystitis, unspecified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
N30.9Cystitis, unspecified
Short description: Cystitis unspecified
ICD-10-CA · Canada · Also written N309
Index terms
Entries in CIHI’s alphabetical index that lead to N30.9. Searching the index by the condition the note names is how coders reach this code.
- Epicystitis
- Infection, infected (opportunistic), bladder
- Infection, infected (opportunistic), vesical
- Cystitis (exudative) (hemorrhagic) (septic) (suppurative)
- Inflammation, inflamed, inflammatory (with exudation), bladder
- Inflammation, inflamed, inflammatory (with exudation), perivesical
Notes for N30.9
As CIHI prints them, with any note N30.9 takes from the headings above it.
Use additional code
Add a code for this detail when the note documents it.
- Use additional code to identify infectious agent (B95-B97) or responsible external agent (Chapter XX).From N30 Cystitis
Excludes
Conditions classified elsewhere.
- Prostatocystitis (N41.3)From N30 Cystitis
- Urinary infection (complicating):• abortion or ectopic or molar pregnancy (O00-O07, O08.8)• pregnancy, childbirth and the puerperium (O23.-)(O75.3) (O86.2)• with urolithiasis (N20-N23)From N30-N39 Other diseases of urinary system
- Certain conditions originating in the perinatal period (P00-P96)certain infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 14: Diseases of the genitourinary system (N00-N99)
Where N30.9 sits
- 1ChapterChapter 14: Diseases of the genitourinary system (N00-N99)
- 2Block N30-N39Other diseases of urinary system
- 3Category N30Cystitis
- 4Valid code N30.9Cystitis, unspecified
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code N30.9 mean?
N30.9 is the ICD-10-CA code for “Cystitis, unspecified” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is N30.9 in ICD-10-CA?
N30.9 sits under N30 Cystitis, within N30-N39 Other diseases of urinary system, within Chapter 14: Diseases of the genitourinary system (N00-N99).
What coding notes apply to N30.9?
ICD-10-CA lists Use additional code, Excludes notes for N30.9, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.