Rheumatic mitral insufficiency

This code represents a heart valve disorder where the mitral valve, located between the left atrium and left ventricle, fails to close properly due to damage caused by rheumatic fever. This improper closure leads to a backflow of blood (regurgitation) into the left atrium during ventricular contraction.

Use this code when documentation explicitly states "rheumatic mitral insufficiency" or "rheumatic mitral regurgitation." This diagnosis is typically made based on echocardiographic findings demonstrating mitral regurgitation in a patient with a history of rheumatic fever or evidence of rheumatic heart disease.

• Always confirm the rheumatic etiology; if not specified, use I34.0.
• Code any associated rheumatic heart conditions, such as rheumatic mitral stenosis, separately.
• Review the patient's history for evidence of rheumatic fever to support this diagnosis.