Your medical expenses are the provider bills and related expenses for items like crutches, wheelchairs, walkers, TENS units, etc.
Often, well after initial treatment is completed, you may require more care such as such as additional surgeries, medication, physicial therapy, etc. It is not uncommon for insurance companies to try to minimize your injuries, even to the extent of hiring doctors to say your injuries are not that serious, you will not need any future medical care, or that you could easily return to work. That's why it is important for your attorney to completely understand how to characterize your injury.