S54.2 - Injury of radial nerve at forearm level S54 - Injury of nerves at forearm level S54.2 - Injury of radial nerve at forearm level S54.20 - Injury of radial nerve at forearm level, unspecified arm S54.21 - Injury of radial nerve at forearm level, right arm S54.22 - Injury of radial nerve at forearm level, left arm