Congenital mitral insufficiency

This code represents a congenital heart defect characterized by improper closure of the mitral valve, leading to regurgitation of blood from the left ventricle back into the left atrium during systole. This insufficiency is present at birth and can range in severity from mild to life-threatening.

Use this code when documentation explicitly states a diagnosis of congenital mitral insufficiency. This diagnosis is typically supported by echocardiography findings demonstrating abnormal mitral valve structure and function, often in pediatric patients or adults diagnosed retrospectively.

• Differentiate from acquired mitral insufficiency (I34.0), which develops later in life due to other conditions.
• Always review documentation for specific details regarding the severity (e.g., mild, moderate, severe) and any associated congenital anomalies, which may require additional codes.
• Ensure the physician's documentation clearly specifies the congenital nature of the mitral insufficiency.