Enforcement Rules of the National Health Insurance Act Article 18

Where a beneficiary is a dependent of more than two of the insured, and has no circumstance set forth in Article 12 of the Act where the beneficiary has difficulty to subscribe to or withdraw from the Insurance together with the insured, such beneficiary shall subscribe to the insurance with one of the insured according to the following order:1. Spouse or a lineal blood relative within the first degree of relationship;2. Lineal blood relative within the second degree of relationship;3. Lineal blood descendant above the three degree of relationship.The circumstances where it is difficult for dependents to subscribe to or withdraw from the Insurance together with the insured set forth in Article 12 of the Act are defined as follows:1. Raised by the grandparent, because parents are divorced, separated, missing, or did not fulfill their child raising obligation.2. Supported by the grandchildren, because the children are missing or did not fulfill their obligation in supporting their parents.3. Illegitimate children born out of wedlock, who are raised by their grandparents.4. Domestic violence victims holding court protection order or other certifications issued by relevant law enforcement or administrative agencies, or holding relevant certificates certified and issued by the Insurer.5. Other circumstances recognized by the Competent Authority.In the case that a beneficiary has any of the circumstances in the preceding paragraph and does not have any of the insured to subscribe to or withdraw from the Insurance together, such beneficiary shall subscribe to the Insurance under Category 6.
中文原文 全民健康保險法施行細則第18條
保險對象分屬二位以上被保險人之眷屬,且無本法第十二條規定難以隨同被保險人辦理投保及退保之情形者,應依下列順序,擇一被保險人依附投保:
一、配偶或一親等直系血親。
二、二親等直系血親。
三、三親等以上直系血親卑親屬。
本法第十二條所稱難以隨同被保險人辦理投保及退保之情形如下:
一、父母離婚、分居、行蹤不明或未盡扶養義務,由祖父母扶養。
二、子女行蹤不明或未盡扶養義務,由孫子女扶養。
三、非婚生子女由祖父母扶養。
四、持有保護令或出示警政、社政機關介入處理及其他經保險人認定證明文件之家庭暴力被害人。
五、其他經主管機關認定之情形。
保險對象有前項情形且無其他應隨同投保之被保險人時,應以第六類被保險人身分投保。

English translation for reference only; the Chinese text prevails. Not legal advice.