Probably Medical Insurance. You do not need to enter the information in the program from box 14. You can ignore any Box 14 codes that don't appear in the drop-down. If none of the categories apply, scroll to the bottom of the list and choose Other–not on above list.
Please feel free to post any additional details or questions in the comment section.
Per IRS, 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.
From TurboTax FAQ:
Employers can put just about anything in box 14; it's a catch-all for items that don't have their own dedicated box on the W-2.
In TurboTax, enter the description from your W-2's box 14 on the first field in the row. Enter the dollar amount and select the correct tax category that goes with that description.
If none of the categories 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. If we need more information, we'll ask you later in the interview.
On the other hand, if box 14 is blank, just skip over it. Don't enter a 0 for any blank boxes.
