Randy is advised by his physician to install an elevator in his residence, since he is afflicted with heart disease. The cost of installing the elevator is $10,000 and it has an estimated useful life...

Randy is advised by his physician to install an elevator in his residence, since he is afflicted with heart disease. The cost of installing the elevator is $10,000 and it has an estimated useful life of 10 years. He installs the elevator in January of the current year, and it increases the value of his residence by $8,000. Disregarding the limitation based on adjusted gross income, how much of the cost of the elevator may Randy take into account in determining his medical expense deduction for the current year?