424.1
ICD-9-CMThis code represents a range of non-rheumatic conditions affecting the aortic valve, including insufficiency (regurgitation), stenosis, and other specified or unspecified disorders. These conditions impair the valve's ability to open and close properly, affecting blood flow from the left ventricle to the aorta.
Use this code when documentation indicates a diagnosis of aortic valve insufficiency, stenosis, or other non-rheumatic aortic valve disorder. This applies to congenital, degenerative, or acquired conditions not specified as rheumatic in origin. Supporting documentation includes echocardiogram reports, physician notes detailing valve function, and diagnostic findings.
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