If a tax medical certificate has written claims not recovered from the scheme, what does it mean?

My employer is paying R 750 @ discovery medical scheme for me every month,I nearly had also 11 month without using it or going to the doctor,so my question is can I claim something @ SARS when's the tax medical certificate return from discovery or I can't claim do to I kept on paying without using it. And when does SARS open this year for submission of IRP5

This should appear on your IRP5 already and your employer should have deducted the Medical Tax Credit which you receive by being a member of a medical aid from your PAYE each month.