During the scene where Diane, Sam, Coach, Norm and Cliff were talking about calling Carla to make sure everything was ok, Sam (Ted Danson) picks up the phone. You can clearly see a white bandage wrapped around his right forearm. If you look closely, you can also see another white bandage that is up near his elbow. (Same arm.) It was never explained in the episode what happened.
Coach: How's life, Norm?
Norm: Ask someone who's got one.
Cliff: I'll go with you I know CPR.
Norm: I'll go I'm a CPA
Carla: Because if he's interested in me, there's something wrong with him.
Sam (Calling Carla, worried Hank may die if he's allowed to have sex with Carla): What Should I say?
Norm: Ask her to look next to her and count the dead people.