Is your employer the administrator for the Flex Spending Account (FSA) or does your employer have a third-party administrator? Have you been provided with a copy of the FSA policy? Usually the policy outlines the reimbursement procedures.

Most likely, your Flex Spending Account (FSA) will allow you to submit eligible medical expenses for reimbursement. You will need to fill out a reimbursement claim form, attach your receipts (regardless you have paid it or not) for eligible expenses, mail or fax the form and receipts to the FSA administrator for reimbursement.

我们公司使用third party FSA, 他们网页上有claim form, 填好了加上receipt复印件一起传真过去就好了。我想你那里应该也可以这样。