The Importance Of Travel Health Insurance
The U.S. government does not provide insurance for U.S. citizens overseas. We do not pay medical bills or unexpected costs. We highly recommend that you purchase travel insurance before you travel to cover emergency medical care, either as part of or separate from trip cancellation insurance.
Health Insurance: Medical facilities and providers abroad may require cash up front and may not accept U.S. insurance plans. U.S. Medicare/Medicaid does not provide coverage outside the United States. Check your health care policy to see if it will cover you overseas. If not, consider buying supplemental insurance. Make sure the insurance you purchase covers any special medical needs or risks you anticipate on your trip.
Emergency Medical Evacuation: Evacuation for medical treatment can cost more than $100,000. You should strongly consider purchasing medical evacuation insurance in case of emergency overseas.
Source: travel.state.gov