S64.9 - Injury of unspecified nerve at wrist and hand level S64 - Injury of nerves at wrist and hand level S64.9 - Injury of unspecified nerve at wrist and hand level S64.90 - Injury of unspecified nerve at wrist and hand level of unspecified arm S64.91 - Injury of unspecified nerve at wrist and hand level of right arm S64.92 - Injury of unspecified nerve at wrist and hand level of left arm