S56.413 - Strain of extensor muscle, fascia and tendon of right middle finger at forearm level S56.4 - Injury of extensor muscle, fascia and tendon of other and unspecified finger at forearm level S56.41 - Strain of extensor muscle, fascia and tendon of other and unspecified finger at forearm level S56.413 - Strain of extensor muscle, fascia and tendon of right middle finger at forearm level