S55.01 - Laceration of ulnar artery at forearm level S55.0 - Injury of ulnar artery at forearm level S55.01 - Laceration of ulnar artery at forearm level S55.011 - Laceration of ulnar artery at forearm level, right arm S55.012 - Laceration of ulnar artery at forearm level, left arm S55.019 - Laceration of ulnar artery at forearm level, unspecified arm