Those who do not have a record of being insured under the NHI program in the two years prior to their return to Taiwan are entitled to get coverage under the NHI system six months after establishing their household registration.

• Those who were abroad for less than two years are qualified for the National Health Insurance as long as they still have their household registration and must enroll in the National Health Insurance program according to the regulations.
• Those who left Taiwan with cancelled household registration less than two years simply have to reestablish their household registration when they return to Taiwan in order to enroll back in the National Health Insurance program immediately.
• Those who left Taiwan with cancelled household registration and had their National Health Insurance cancelled for more than two years, a re-establishment of their household registration for 6 months upon returning to Taiwan is required before being able to join the National Health Insurance program again.