If you are currently graded as PES D/pending medical review (under the refreshed MCS), the Medical Classification Centre (MCC) may need more time to assess your medical fitness for National Service. Your enlistment will be scheduled once your definitive medical fitness status has been determined. It is important to note that any changes in appointment dates for your medical review may result in a delay in your enlistment. You are advised to attend all medical appointments that you have been scheduled for.