You won't get a 2016 W-2 until 2017. Wait until you get it. It should not be negative since any 2015 reimbursement should not be reported on a 2016 W-2. Like I said, it is information only so you can leave code DD off altogether since it does not go on your tax return at all.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
