An amendment exempting most older people from paying National Health Insurance (NHI) premiums would likely harm the system’s sustainability and raise premiums, Minister of Health and Welfare Shih Chung-liang (石崇良) said yesterday.The premier is expected to refuse to countersign the bill today. The Le. Add TT as Preferred Source An amendment exempting most older people from paying National Health Insurance (NHI) premiums would likely harm the system’s sustainability and raise premiums, Minister.