Yes, and no. If you have a travel insurance plan with trip interruption protection and your getting sick is being hospitalized due to a heart attack, then thats a covered reason to head home early.
Any unexpected illness or injury that causes an attending medical doctor to advise you to return home is covered. (Be sure to get that in writing youll need it for the travel insurance claim.)
Trip interruption coverage reimburses a traveler up to 150% of their unused pre-paid trip costs if they have to end their trip and return home for a covered reason.
The U.S. Department of State has issued an updated travel warning for U.S. citizens traveling to Afghanistan due to ongoing security threats and reminds U.S. citizens of the danger of kidnapping, assassination, and retaliatory insurgent attacks. At this time, no part of Afghanistan is considered safe from violence and the potential does exist for hostile acts against U.S. and Western nationals.