If you don't see a code for a Box 14 entry on your Form W-2 (or if none of the drop-down code options apply), scroll to the bottom of the list and choose Other–not on above list. Don’t worry. We'll figure out if it impacts your return or not.
See additional information at: What is Box 14 on my W-2 for?
The information that your employer lists in Box 14 of your W-2 does not usually affect your income tax return. In fact, for many Box 14 entries, the IRS does not even provide a place for it to get reported on your return forms. They are reported to you in Box 14 simply for informational purposes.