2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Diseases Of Arteries, Arterioles, And Capillaries 440-448 > 2006 ICD-9-CM Diagnosis 446 Polyarteritis nodosa and allied conditions View the most recent version of ICD-9-CM 446 446 is a non-specific code that cannot be used to specify a diagnosis