2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Chronic Rheumatic Heart Disease 393-398 > 2006 ICD-9-CM Diagnosis 396 Diseases of mitral and aortic valves View the most recent version of ICD-9-CM 396 396 is a non-specific code that cannot be used to specify a diagnosis 396 Includes involvement of both mitral and aortic valves, whether specified as rheumatic or not