2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Genitourinary System 580-629 > Other Diseases Of Urinary System 590-599 > Calculus Of Lower Urinary Tract 594.* > 2008 ICD-9-CM Diagnosis 594.9 Calculus of lower urinary tract unspecified  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 594.9 can be accessed here. 594.9 is a specific code that can be used to specify a diagnosis 594.9 contains 2 index entries View the ICD-9-CM Volume 1 594.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 594.9 excludes: calculus of urinary tract NOS (592.9) Index entries containing 594.9: Calculus, calculi, calculous 592.9 urinary (duct) (impacted) (passage) (tract) 592.9 lower tract NEC 594.9 specified site 594.8 Stone(s) - see also Calculus urinary (duct) (impacted) (passage) 592.9 lower tract NEC 594.9