HR replied with the following: "Box 16 consists of all gross wages (including imputed GTL) minus 401(k) deduction only. Healthcare, FSA, etc. is not deducted for state wages."
I can see that box 16 = box 1 + dependent care FSA (box 10 or $ from yearend paycheck) + health FSA ($ from yearend paycheck) + health insurance premiums ($ from yearend paycheck).
So, for me, there are no "other wage adjustments" that need to be made on this screen. The numbers all tie out. The health insurance premiums were a key missing link.
