You should not have received the 1099-MISC for re-imubersment if you are a W2 employee.
"Employee business expense reimbursements. Do not
use Form 1099-MISC to report employee business expense
reimbursements. Report payments made to employees
under a nonaccountable plan as wages on Form W-2."
Page 3 from the link below.
https://www.irs.gov/pub/irs-pdf/i1099msc.pdf
Additionally if your re-imbursment was accountable, where you provide a receipt to receive the re-imbursment, they cannot report what they paid you in a 1099-MISC.
It is advisable that you speak with your employer regarding this discrepancy.
