Also, I'd consider travel medical insurance and medical evacuation insurance. If you don't have any health insurance at all, it's a no-brainer. If you have health insurance, double check that your policy covers incidents outside of the US, what they cover, and what you need to do. Even if they do, be prepared that some facilities will expect payment upfront and then you have to submit to your insurance for reimbursement.
Some insurance doesn't cover the cost of medical transportation back to the US, or if they do, it is only if the treating physician feels that transport back is necessary because they can't care for you. I personally use AirMed International. They will transport you back even if it is not medically necessary. It's not necessary for me, but for the amount of travel my family and I do (both diving and non-diving) it makes sense for us.
Some insurance doesn't cover the cost of medical transportation back to the US, or if they do, it is only if the treating physician feels that transport back is necessary because they can't care for you. I personally use AirMed International. They will transport you back even if it is not medically necessary. It's not necessary for me, but for the amount of travel my family and I do (both diving and non-diving) it makes sense for us.