Yes your gross income would be the R72 000 + the medical aid fringe benefit of R11 600 = R83 600.
The primary rebate for the 2013 tax year is R12 080, not R11 040.
Your medical tax credit amount for the 2013 tax year is incorrect. It should be 242*12 = 2904.
Therefore your total tax payable for the year is R64, or approximately R6 PAYE per month as AMB57 calculated.
I made a simple personal income tax calculator which performs the medical aid tax credit calculation for you:
Medical tax credits calculator 2013.xlsx
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