Many private medical plans, Blue Cross, Great West Life and Sun Life plans provide coverage for renting knee walkers under the category of Medical Appliance Rentals. Be sure to ask your doctor to write you a prescription for a knee walker in order to get reimbursement for your rental costs from your health plan insurer. If you plan on renting more than one knee walker, ask your doctor to note that in the prescription as some plans will cover the cost of more than one knee walker rental. Should you be uncertain as to your medical plan coverage, check with your insurer and ask what your plan covers under Medical Appliance Rentals. Knee walkers are considered medical appliances by the Canada Revenue Agency and are accordingly exempt from GST charges.