Mallet finger of left finger(s)

This code signifies a mallet deformity affecting one or more fingers on the patient's left hand. This condition is characterized by an inability to actively extend the distal interphalangeal (DIP) joint, resulting in a flexed posture of the fingertip, often due to a ruptured or avulsed extensor tendon.

Apply this code when documentation clearly indicates a diagnosis of mallet finger specifically affecting the left hand. This typically arises from trauma, such as a direct blow to the fingertip or forceful flexion of an extended finger, leading to extensor tendon disruption.

• Ensure laterality is explicitly documented as "left" to support this specific code.
• Distinguish from other finger deformities like boutonnière deformity, which affects the proximal interphalangeal (PIP) joint.
• Look for documentation of the specific finger(s) involved, though this code covers any left finger.