First we have to examine the room/corridor and see if the other half of the man is there.
There is a door, a computer and an ironic motivational poster.
No signs of another half to the body, dashing your hopes of becoming an amateur spinal surgeon.
Use ID Card with Half a Man.
Is it a match?
There is no match. A betting man might wager that the ID card belonged to the body on which it was found, but gambling is dangerous, kids.