Valgus deformity, not elsewhere classified, left ankle

This code signifies an outward angulation of the left ankle joint, where the distal part of the joint is angled away from the midline of the body. This deformity can affect the alignment and biomechanics of the foot and ankle, potentially leading to pain, instability, or gait abnormalities.

Use this code when documentation clearly indicates a valgus deformity specifically affecting the left ankle, and the condition is not classified more specifically elsewhere (e.g., congenital, post-traumatic). This code is appropriate for acquired or idiopathic valgus deformities of the left ankle. Supporting documentation would include physician notes detailing the physical exam findings, imaging reports (X-rays, MRI) confirming the valgus angulation, and the specific anatomical location.

• Ensure the documentation specifies "left ankle" to differentiate from right (M21.071) or unspecified (M21.079) laterality.
• Verify that the valgus deformity is not secondary to another condition that has a more specific ICD-10-CM code (e.g., a fracture malunion).
• Distinguish valgus from varus deformity (inward angulation), which would be coded differently (M21.1- series).