When the amount of co-payment made in relation to benefits for medical treatment or the amount calculated by deducting, from the amount of expenses incurred in medical treatment (excluding dietary treatment and living support; the same applies hereinafter in the following paragraph), an amount equivalent to the amount paid as medical expenses combined with treatment outside insurance coverage, medical expenses, medical expenses for home-nursing, dependent's medical expenses, or dependent's medical expenses for home-nursing in relation to the medical treatment (referred to as the "amount of co-payment, etc." in paragraph (1) of the following Article) is extremely large, the insurer pays high-cost medical expenses to the person who received payment of the benefits for medical treatment, or medical expenses combined with treatment outside insurance coverage, medical expenses, medical expenses for home-nursing expenses, dependent's medical expenses, or dependent's medical expenses for home-nursing.
The requirements for payment of high-cost medical expenses, the amount thereof, and other necessary matters concerning the payment of high-cost medical expenses are specified by Cabinet Order by taking into consideration the impact of sharing of costs necessary for the relevant medical treatment on household finances, in particular the household finances of persons who receive medical treatment continuously over a long period, and the amount of expenses incurred in the medical treatment.
高額療養費の支給要件、支給額その他高額療養費の支給に関して必要な事項は、療養に必要な費用の負担の家計、とりわけ長期にわたって継続的に療養を受ける者の家計に与える影響及び療養に要した費用の額を考慮して、政令で定める。