Well, they aren't specific that the expense must be "in Malaysia" for several of the items. But you'd be taking a chance at denial. Maybe someone else has been able to get reimbursement in non-Malaysian medical expenses. I have just assumed that the goal was to get you to spend the money IN MALAYSIA.
Also note that it's reimbursement, not in advance of the expense/procedure.
I also thought that changing banks was not allowed except at renewal.