There is no perfectly free. Korean can benefit from National health care paid by office workers or local insured, and National Health Insurance Corporation pays about 70 to 90 percent, and only the remaining 10 to 30 percent is covered by patients. It's very wide coverage and people can benefit from health care for affordable paid. the national medical subsidy is paid exceptionally if they are classified as Lowest basic recipients(almost no income ppl) and require continuous treatment. but any other cases are required to pay their medical expenses no exception.