2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Genitourinary System 580-629 > Other Diseases Of Urinary System 590-599 > 2006 ICD-9-CM Diagnosis 595 Cystitis View the most recent version of ICD-9-CM 595 Inflammation of the urinary bladder. 595 is a non-specific code that cannot be used to specify a diagnosis Use additional code to identify organism, such as Escherichia coli [E. coli] (041.4) 595 Excludes prostatocystitis (601.3)