Because arthropods are characterized by bilaterally symmetric  segmented bodies, an exoskeleton made from chitin, and joint  appendages, pretty much any characteristic otherâ¦ than these might  disqualify the organism. Mammals for example, with their internal  skeleton would be disqualified.
Medical Expense Deduction. You can deduct medical mileage as part of your overall medical expense deduction. The IRS limits the medical deduction to the amount of medical expenses in excess of 7.5 percent of your Adjusted Gross Income.
The mileage deduction is a tax write-off you can take to offset the cost of using your personal vehicle for business reasons. You can claim 53.5 cents per business mile in 2017 on your annual return.