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ICD-10 CM Code I35.9

I35.9 Nonrheumatic aortic valve disorder, unspecified

Excludes Type 1

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)