2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Diseases Of The Ear And Mastoid Process 380-389 > Other Disorders Of Ear 388.* > 2008 ICD-9-CM Diagnosis 388.2 Sudden hearing loss 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 Therefore, this code may be out of date.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 388.2 can be accessed here. Sensorineural hearing loss which develops suddenly over a period of hours or a few days. It varies in severity from mild to total deafness. Sudden deafness can be due to head trauma, vascular diseases, infections, or can appear without obvious cause or warning. 388.2 is a specific code that can be used to specify a diagnosis 388.2 contains 3 index entries View the ICD-9-CM Volume 1 388.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Index entries containing 388.2: Deafness (acquired) (complete) (congenital) (hereditary) (middle ear) (partial) 389.9 sudden NEC 388.2 Loss hearing - see also Deafness sudden NEC 388.2 Sudden hearing loss NEC 388.2