In reply to kellyb (velvet.mustard):
Kelly,
I have a fairly complex personal past medical history and often advise mountaineers with pre existing medical conditions. I recommend World First based in Exeter. I have an annual policy for up to 4000m covering climbing, skiing and kayaking. This year I have excluded the USA to save on the premium.
I have visited their office and spoken to their managing director. To offer this service they have invested in a complex but sensible computer programme for risk assessment. If you obtain a phone quote allow an hour for giving the details they need. their questions are medically sensible but detailed. Their cover is not cheap but tends to realistically reflect medical risk.
For pure rescue I also use the Austrian Alpine Club membership policy.
I should say I have never had to make a claim and hope I never do.
I wish you well on your travels.
David Hillebrandt