2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Disorders Of The Peripheral Nervous System 350-359 > Hereditary And Idiopathic Peripheral Neuropathy 356.* > 2006 ICD-9-CM Diagnosis 356.4 Idiopathic progressive polyneuropathy View the most recent version of ICD-9-CM 356.4 356.4 is a specific code that can be used to specify a diagnosis 356.4 contains 3 index entries View the ICD-9-CM Volume 1 356.* hierarchy  Index entries containing 356.4: Neuropathy, neuropathic (see also Disorder, nerve) 355.9 peripheral (nerve) (see also Polyneuropathy) 356.9 idiopathic 356.9 progressive 356.4 Polyneuropathy (peripheral) 356.9 idiopathic 356.9 progressive 356.4 progressive 356.4