You can also deduct any additional
copayments, prescription drugs, lab fees and more as part of your medical expenses - if your total expenses exceed the 7.5% limit. The IRS also allows you to factor in common fees and services if they are not fully covered by your insurance plan, such as therapy and nursing services. In fact, the IRS' definition of medical expenses is fairly broad and can even include such items as acupuncture and smoking-cessation programs.