You'll want an international health insurance plan. For anything major, most °µÍø½ûÇøs fly to Dubai. For an emergency, there is CURE or military hospitals (if you or your colleagues have connections). Have a plan. Afghan hospitals have too little funding, supplies, and often education. Also beware when you are buying medication. Try to get Iranian brands and check the expiration dates/seals on everything! Again, I'd buy over the counters and prescriptions in UAE to stock up.
Best of luck!