diagnosis coding-please help

If a patient comes in for a recheck appt for their hypertension but the doctor also mentions seizure d/o and is on dilantin and that the patient used xanax for anxiety, and tells them to continue on these medications in the plan can I code these as well and use them in the mdm?

thanks

re: diagnosis coding-please help

You code first the reason for the encounter followed by any conditions managed.