S55.00 - Unspecified injury of ulnar artery at forearm level S55.0 - Injury of ulnar artery at forearm level S55.00 - Unspecified injury of ulnar artery at forearm level S55.001 - Unspecified injury of ulnar artery at forearm level, right arm S55.002 - Unspecified injury of ulnar artery at forearm level, left arm S55.009 - Unspecified injury of ulnar artery at forearm level, unspecified arm