N30.9

Cystitis, unspecified

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Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

Inherited from N30Cystitis
Excludes 1

prostatocystitis (N41.3)

Use additional

code to identify infectious agent (B95-B97)

Inherited from N30-N39Other diseases of the urinary system
Excludes 2

urinary infection (complicating): abortion or ectopic or molar pregnancy (O00-O07, O08.8) pregnancy, childbirth and the puerperium (O23.-, O75.3, O86.2-)

Inherited from chapter 14Diseases of the genitourinary system
Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Official Guidelines for N30.9

FY 2026 ›
I.C.14Chapter-specific guidanceChapter 14: Diseases of Genitourinary System (N00-N99)

Subsections