14 hours ago, BritManToo said:

Children (unlike adults) are entitled to free health care at any government hospital.

No documentation required, apart from proof of citizenship.

That is tosh. You can only use the government hospital to which you are registered at. If that particular hospital doesn't provide the treatment etc to help your problem the doctor will provide a referral letter to the government hospital which will. Get it right. Been there done that. Father of 3 Thai/farang children.

15 hours ago, BritManToo said:

Doesn't apply to children, any government hospital, anytime.

No, you must get a doctors referral letter from your registered hospital to use any other.

12 hours ago, PPMMUU said:

Automatic at birth, no registration is required.  This right is linked to the citizen's ID since birth. The location for receiving medical treatment is determined by the place of birth indicated in the house ID. The only administrative task you may need to consider is transferring your healthcare service to a different location, provided they are still accepting new enrollees.

Actually it is place of residence, not place of birth, that determines it and is listed in the house registration.