Are you planning to travel or even live overseas during retirement? This might be a great time to see the world. Just be aware that your Medicare benefits, or any US-based health insurance plan, may not really provide adequate medical coverage after you leave the country. Original Medicare (Part A & B) only covers medical care outside of the US in some very specific circumstances that does not apply to the majority of elderly travelers. Some Medicare plans offer emergency services outside of the country, but this may not be sufficient for an extended trip.