ICD-10-CM > I00-I99 > I30-I5A > I35 I35 Nonrheumatic aortic valve disorders Non-Billable/Non-Specific Code Also , if applicable, bicuspid aortic valve (Q23.81) Type 2 Excludes aortic valve disorder of unspecified cause but with diseases of mitral and/or tricuspid valve(s) (I08.-)aortic valve disorder specified as congenital (Q23.0, Q23.1)aortic valve disorder specified as rheumatic (I06.-)hypertrophic subaortic stenosis (I42.1) Codes I35.0Nonrheumatic aortic (valve) stenosisI35.1Nonrheumatic aortic (valve) insufficiencyI35.2Nonrheumatic aortic (valve) stenosis with insufficiencyI35.8Other nonrheumatic aortic valve disordersI35.9Nonrheumatic aortic valve disorder, unspecified