2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Genitourinary System 580-629 > Diseases Of Male Genital Organs 600-608 > Orchitis And Epididymitis 604.* > 2008 ICD-9-CM Diagnosis 604.91 Orchitis and epididymitis in diseases classified elsewhere  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 Therefore, this code may be out of date.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 604.91 can be accessed here. 604.91 is a specific code that can be used to specify a diagnosis 604.91 contains 6 index entries View the ICD-9-CM Volume 1 604.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Code first underlying disease, as: diphtheria (032.89) filariasis (125.0-125.9) syphilis (095.8) 604.91 excludes: orchitis: gonococcal (098.13, 098.33) mumps (072.0) tuberculous (016.5) tuberculous epididymitis (016.4) Index entries containing 604.91: Epididymitis (nonvenereal) 604.90 diphtheritic 032.89 [604.91] filarial 125.9 [604.91] syphilitic 095.8 [604.91] Orchitis (nonspecific) (septic) 604.90 diphtheritic 032.89 [604.91] filarial 125.9 [604.91] syphilitic 095.8 [604.91]