I35.9

I35.9: Nonrheumatic aortic valve disorder, unspecified

Billable / specific codeICD-10-CM

I35.9 is a billable, specific ICD-10-CM code for nonrheumatic aortic valve disorder, unspecified. It is valid for submission on a claim.

Check I35.9 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above I35.9

Not part of this code, but both may be coded when both are present.

Written on I35: Nonrheumatic aortic valve disorders

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)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

I35.9 is named in 15 Medicare coverage policies: 15 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
A52868Billing and Coding: Transesophageal Echocardiography (TEE)
A56421Billing and Coding: CT of the Abdomen and Pelvis
A56451Billing and Coding: Cardiac Computed Tomography (CCT) and Coronary Computed Tomography Angiography (CCTA)

Alphabetic index entries that lead here

Disease, diseased›aortic(heart) (valve)
Lesion›aortic(valve)
Disease, diseased›heart›aortic(valve)

Code history

Unchanged in every release from FY2024 to FY2027.