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  5. Nonrheumatic aortic valve disorders (I35)

Nonrheumatic aortic valve disorders (I35)

ICD-10 code I35 covers nonrheumatic aortic valve disorders, which are conditions affecting the aortic valve not caused by rheumatic fever. These codes specify various valve issues such as narrowing (stenosis), leaking (insufficiency), or a combination of both, helping healthcare providers accurately record and manage these distinct heart valve diseases.

The codes within this section include I35.0 for nonrheumatic aortic stenosis; also known by terms like "aortic stenosis," "senile aortic stenosis," or "supravalvar aortic stenosis"; which involves narrowing of the valve restricting blood flow. I35.1 codes aortic valve leaking, called "aortic insufficiency" or "aortic regurgitation," caused by valve malfunction or damage and includes prosthetic valve issues. I35.2 defines combined stenosis with insufficiency, capturing cases with both narrowing and leaking. I35.8 includes other nonrheumatic valve disorders such as valve calcification, cusp abnormalities, and complications like endocarditis. Finally, I35.9 is used when the nonrheumatic aortic valve disorder is unspecified but documented. These codes are vital for clinical documentation and billing related to nonrheumatic aortic valve conditions.

Instructional Notations

Code Also

A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.

  • , if applicable, bicuspid aortic valve Q23.81

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

  • aortic valve disorder of unspecified cause but with diseases of mitral and/or tricuspid valves I08
  • aortic valve disorder specified as congenital Q23.0 Q23.1
  • aortic valve disorder specified as rheumatic I06
  • hypertrophic subaortic stenosis I42.1

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Aortic Valve Stenosis

A pathological constriction that can occur above (supravalvular stenosis), below (subvalvular stenosis), or at the AORTIC VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA.