Diabetic Shoes have to be fitted properly and you'll need to go into the doctor to get the Diabetic Shoes and get them fitted.
A prescription is required to get diabetic shoes and Medicare Will usually cover the cost of diabetic shoes once you fill out a form and your doctor prescribes the diabetic shoes.
Also if you're a veteran then the VA medical center may cover the cost of the diabetic shoes as well if the veteran needs the diabetic shoes.