Good luck
With your age and a Chronic condition if you get insured it’s going to be pricey
If you get insured you will need to offset the cost with omissions and super high deductibles (฿300k) something like that
If you have a health insurance via a pension or something like that it will help
But in reality it’s not a good outlook for you
Now health out of HK Insures lots of people with chronic conditions
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Pricey
Or you could just self pay…Christian hospitals in Thailand are the mid tier hospitals between govt and HISO
Good luck