If you are an employee, then your employer should have treated these reimbursements differently.
Per the IRS, and this is for employers to follow, "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.
Generally, payments made to employees under an
accountable plan are not reportable on Form W-2, except in
certain cases when you pay a per diem or mileage
allowance" You may need to obtain a corrected Form W-2 from your employer.
However if you were self-employed or independent contractor, which would be reported under box 7, then per the IRS" A fee paid to a nonemployee, including an independent
contractor, or travel reimbursement for which the
nonemployee did not account to the payer, if the fee and
reimbursement total at least $600." If it is box 7, then the IRS will expect you to report this amount on Schedule C Profit or Loss From Business. Then you may be able to deduct any expenses related to this income.
For more information, please see the following IRS link: https://www.irs.gov/pub/irs-pdf/i1099msc.pdf
