Expats aged 50+ living in Thailand on a long-stay visa will have to buy health insurance from July onwards. Authorities are now preparing the new guidelines to enforce the rules approved by Cabinet last month. But the July start date isn’t yet ‘set in stone’.
The new regulation requires expats on the long-stay non-immigrant O-A visa to have health insurance that offers 40,000 baht coverage for hospital outpatient treatment and 400,000 baht for inpatient.

Saowapa Jongkittipong, who leads the Health Service Support Department’s International Health Division says, “We will ask the Immigration Bureau, the Foreign Ministry and the Insurance Department for additional details and implementation guidelines
The new regulation requires expats on the long-stay non-immigrant O-A visa to have health insurance that offers 40,000 baht coverage for hospital outpatient treatment and 400,000 baht for inpatient
The problem of bad debts incurred by foreigners has existed for many years.
Earlier this year, Health Service Support Department director-general Dr Nattawuth Prasertsiripong said his department had decided to establish claim centres in Chon Buri, Chiang Mai, Phuket, Phang Nga and Surat Thani provinces to help state hospitals collect what is owed to them by foreign patients. The very fact that such centres are required reflects the severity of the problem.

SOURCE: Department of Health Service Support | The Nation
Buy the cheapest ins you can, they won’t pay your claim if you have a heart attack or stroke if you tell them you take preventive cholesterol lowering drugs because they consider that a “pre existing condtion” and No Thai Ins company will pay for anything if they suspect you have any kind of pre exisiting condition, they will lie to you and say what ever to get you to sign up, basiclly you’ll be paying for very expensive accident insurance: https://longstay.tgia.org/