The NHIS announced that it had expanded the scope of particular calculation for rare diseases and chronic kidney dialysis patients subject to particular calculation of health insurance from January 1 this year to ease the burden on the medically vulnerable. The expansion will significantly reduce the burden on patients by lowering the burden on them from 20% of hospitalization and 30% to 60% of outpatients to 10% of both hospitalization and outpatients. First of all, it is expected that about 4,000 people with the disease will benefit from medical expenses reduction as special calculation cases will be applied to 42 new rare diseases, including "polycystic kidney, common chromosome dominance." The NHIS has been workin