First Year Applicant
The applicant is-invalid required toast have a valid-feedback health insurance policy, either form Thai or from Overseas insurance companies, which the minimum coverage of 100,000 USD accounting for 3 million baht and it includes the treatment of Covid-19. The insurance certificate is strictly required to be presented to the immigration.
For more information about the local health insurance policy for the long stay visa, please visit longstay.tgia.org/companiessoa
In case of non-Thai health insurance policy, the insurance certificate form can be downloaded from here, the form must be signed by the authorized person of the insurance company or public organization.
Renewal (before Sep,1 2022)
The applicant must have the valid local health insurance policy with the minimum of coverage of 400,000 Baht for inpatient treatment and 40,000 Baht for outpatient treatment.
In the case where the accompanying spouse is not eligible to apply for the O-A visa, he or she will be considered for a temporary stay under Category "O" visa. A marriage certificate must be provided as evidence.
Look at this pinned topic starting at number 14.
Laws, regulations, Police Orders, etc
Maybe I copied the wrong link.
What you posted is prior to September of 2022.