Medical Reimbursement & Reimbursement of Mediclaim Insurance to Employees

As an employer, i want to provide BOTH reimbursement of medical bills upto Rs.15,000/- p.a., AS WELL AS  reimbursement of mediclaim insurance purchased by the employees. While medical bill reimbursement upto Rs.15,000/- p.a. is exempt from tax in the hands of employees, there is no exemption limit mentioned for reimbursement of mediclaim insurance purchased by the employees, as per below text taken from Income Tax website. "2) Medical insurance premium paid or reimbursed by the employer is not chargeable to tax. 3) Any other expenditure incurred or reimbursed by the employer for providing medical facility in India is not chargeable to tax up to Rs.15,000 in aggregate per assessment year." So the queries are : 1) Will reimbursement of mediclaim insurance to employee is separately exempted in the hands of employee, apart from medical bill reimbursement ? If yes, is there any ceiling amount for such exemption ? 2) Since the Mediclaim Insurance is purchased by the employee and reimbursed by the employer, can the employee claim its deduction under section 80 D ? 3) Can i PAY a fix monthly amount for both these items i.e. medical bill reimbursement Rs.1,250 p.m. and mediclaim insurance reimbursement Rs.2,000 p.m., in the employee's monthly salary slip and decide the employee's actual tax liability on yearly basis, based on actual bills submitted and mediclaim insurance paid by employee during the financial year ? Regards