Stuff in box 14 is almost always informational, you can usually ignore it.
Yes the threshold is fairly high for medical deductions so you need a lot of other uncompensated stuff going on to worry about it. Box 1 already reflects it (if it's taxable it's there, if it's not taxable, it's been deducted already). Occasionally, something that they don't take out pretax (i.e., is included in box 1 number) is deductible. You'd have to figure out what exactly it is that they're reporting there. In this case, as I said, even if it were deductible, it probably won't make any bottom line difference.