Hello there, I've also posted a question about health insurance on the road, except I have a pre-existing condition and am unsure of how to best handle it. I have come across something called health insurance for travelers and expatriates via GeoBlue (under the Blue Shield wing). https://geobluetravelinsurance.com/
A lot of travel insurance includes issues when your family member dies and you need to visit home, or if you die outside of the US, your remains can be transported home, some medical coverage while traveling (lots of stringent requirements in order to file a claim and get reimbursed). I'm guessing the best method is to check head into clinics, but I have not embarked my RTW trip yet and am still looking for information. Maybe someone can shed some light here.
I have signed up with the International Association for Medical Assistance to Travellers (www.iamat.org) and they send a booklet with a of clicnics/hospitals that offer medical care.
Boots n All www.bootsnall.com/travel-insurance/travel-medical-insurance.html offers Travel Medical Insurance and have a few plans to pick from, but I have not used any, so cannot provide commentary on it.
Hope this helps somewhat!
Would you mind sharing which travel insurance plan you picked?