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2007 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.* > 2007 ICD-9-CM Diagnosis 388.42 Hyperacusis This code may be outdated. View the most recent version of ICD-9-CM 388.42 An abnormally disproportionate increase in the sensation of loudness in response to auditory stimuli of normal volume. COCHLEAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; FACIAL NERVE DISEASES; STAPES SURGERY; and other disorders may be associated with this condition. 388.42 is a specific code that can be used to specify a diagnosis 388.42 contains 1 index entry View the ICD-9-CM Volume 1 388.* hierarchy Index entries containing 388.42: Hyperacusis 388.42