Chronic instability of knee, left knee

This code signifies persistent laxity or giving way of the left knee joint due to chronic ligamentous insufficiency. It indicates a long-standing issue with the knee's stability, often resulting from prior injuries or degenerative changes.

Apply this code when documentation explicitly states "chronic instability" of the left knee. This diagnosis is typically supported by a history of recurrent knee sprains, subjective complaints of the knee "giving out," and physical examination findings consistent with ligamentous laxity.

• Ensure the documentation specifies "chronic" instability; acute instability uses different codes.
• Laterality is crucial; verify the documentation clearly indicates the left knee.
• Do not use this code for general knee pain without documented instability.