Do I have to pay hospitalization insurance for a heart attack when traveling with a group to Thailand?

Hello, I didn't catch what you said. Didn't you buy travel insurance? If not, you can't claim. In addition, because you are going with a group, you can negotiate with the travel agency to see how to deal with it.

I also want to remind you that most elderly people will have heart disease. As long as it is a pre-existing disease, that is, a past medical history, even if you have insured travel insurance before you travel, you can't get the insurance company's claims!

I hope my answer can help you!