Currently, health insurance has two forms of participation: compulsory health insurance and voluntary health insurance. For compulsory health insurance, there are 6 groups of subjects participating in health insurance as specified in Decree 146/2018/ND-CP, which are: Groups paid by employees and employers. The social insurance agency pays the group. The State budget pays the group. The State budget supports the group. The group participating in health insurance by household; The group is closed by the employer. According to the latest regulations in Decree 146/2018/ND-CP, the participants of voluntary health insurance do not belong to 6 groups participating in voluntary health insurance.