99213, 99354
lmao this is like a med school question, weird to see something like this here.
Well the most immediate risks would be that he cut an artery or vein. This would mean that he could possibly bleed out. There is also shock that would come into play. So the first steps would be look at where the cut is and see if you can tell by that if it did Nick an artery. If you can't tell look at the color of the blood of it is arterial blood it will be a very dark red. Apply direct and consistent pressure to the wound and pay attention to whether or not they are starting to get pale. Then either use a phone or call out for help.
It is important to monitor your word choice in a professional environment more than in personal affairs because in a professional setting, your superiors could be watching/listening to the way you act and talk. It would not be appropriate to use slang language in a professional setting.
Hope this helps you. :)