Rheumatic aortic stenosis

This code identifies a narrowing of the aortic valve opening specifically caused by rheumatic fever. This condition obstructs blood flow from the left ventricle to the aorta, leading to increased workload on the heart. It is a chronic sequela of rheumatic heart disease.

Use this code when documentation clearly indicates aortic stenosis with a confirmed or strongly suspected rheumatic etiology. This typically applies to patients with a history of rheumatic fever or other signs of rheumatic heart disease. Documentation should specify the valve involved and the underlying cause.

• Differentiate from non-rheumatic aortic stenosis (e.g., degenerative or congenital), which would be coded differently.
• Always look for documentation of the specific valve affected and the cause.
• Consider sequencing with active rheumatic fever if still present, though this code typically represents a chronic condition.