S56.59 - Other injury of other extensor muscle, fascia and tendon at forearm level S56.5 - Injury of other extensor muscle, fascia and tendon at forearm level S56.59 - Other injury of other extensor muscle, fascia and tendon at forearm level S56.591 - Other injury of other extensor muscle, fascia and tendon at forearm level, right arm S56.592 - Other injury of other extensor muscle, fascia and tendon at forearm level, left arm S56.599 - Other injury of other extensor muscle, fascia and tendon at forearm level, unspecified arm