①A disability basic pension is paid to a person who has suffered an illness or been injured, and who, on the date of first receiving medical examination or treatment from a physician or dentist for that illness or injury and an illness resulting from it (hereinafter referred to as "injury or illness") (hereinafter referred to as the "date of first medical examination"), fell under any of the following items, when, on the day on which one year and six months have elapsed, calculated from that date of first medical examination (or, where that injury or illness was cured within that period, the day it was cured (including the day on which the symptoms became fixed and no further therapeutic effect could be expected); hereinafter referred to as the "disability recognition date"), that person is, because of that injury or illness, in a state of disability to the extent of falling under the disability grade prescribed in the following paragraph. However, this does not apply where, on the day preceding the date of first medical examination relating to that injury or illness, the person had an insured period up to the month two months before the month in which that date of first medical examination falls, and the period obtained by combining the premium-paid period and the premium exemption period relating to that insured period is less than two-thirds of that insured period.

②The disability grade is, according to the degree of disability, Grade 1 and Grade 2 in order from the most severe, and the state of disability for each grade is specified by Cabinet Order.