High-cost medical expenses are paid to the insured person on the reference date prescribed in item (i) if any of the total sum of the amounts listed in items (i) through (vi) (hereinafter in this paragraph referred to as the "total for the insured person on the reference date"), the total sum of the amounts listed in items (vii) through (xii) (hereinafter in this paragraph referred to as the "total for the dependent on the reference date"), or the total sum of the amounts listed in items (xiii) through (xviii) (hereinafter in this paragraph referred to as the "total for former dependents") exceeds the base amount for calculating high-cost medical expenses, and the amount paid is the total sum of the amount obtained by multiplying the amount obtained by deducting the base amount for calculating high-cost medical expenses from the total for the insured person on the reference date (if that amount is less than zero, zero) by the high-cost medical expenses apportionment rate (meaning the rate obtained by dividing the amount listed in item (i) by the total for the insured person on the reference date), the amount obtained by multiplying the amount obtained by deducting the base amount for calculating high-cost medical expenses from the total for the dependent on the reference date (if that amount is less than zero, zero) by the high-cost medical expenses apportionment rate (meaning the rate obtained by dividing the amount listed in item (vii) by the total for the dependent on the reference date), and the amount obtained by multiplying the amount obtained by deducting the base amount for calculating high-cost medical expenses from the total for former dependents (if that amount is less than zero, zero) by the high-cost medical expenses apportionment rate (meaning the rate obtained by dividing the amount listed in item (xiii) by the total for former dependents); provided, however, that this does not apply if the insured person on the reference date is, on the reference date (meaning the last day of the calculation period (meaning the period from August 1 each year to July 31 of the following year; the same applies hereinafter); the same applies hereinafter), a person to whom the provisions of Article 74, paragraph (1), item (iii) of the Act apply.
高額療養費は、第一号から第六号までに掲げる額を合算した額(以下この項において「基準日被保険者合算額」という。)、第七号から第十二号までに掲げる額を合算した額(以下この項において「基準日被扶養者合算額」という。)又は第十三号から第十八号までに掲げる額を合算した額(以下この項において「元被扶養者合算額」という。)のいずれかが高額療養費算定基準額を超える場合に第一号に規定する基準日被保険者に支給するものとし、その額は、基準日被保険者合算額から高額療養費算定基準額を控除した額(当該額が零を下回る場合には、零とする。)に高額療養費按分率(同号に掲げる額を、基準日被保険者合算額で除して得た率をいう。)を乗じて得た額、基準日被扶養者合算額から高額療養費算定基準額を控除した額(当該額が零を下回る場合には、零とする。)に高額療養費按分率(第七号に掲げる額を、基準日被扶養者合算額で除して得た率をいう。)を乗じて得た額及び元被扶養者合算額から高額療養費算定基準額を控除した額(当該額が零を下回る場合には、零とする。)に高額療養費按分率(第十三号に掲げる額を、元被扶養者合算額で除して得た率をいう。)を乗じて得た額の合算額とする。ただし、当該基準日被保険者が基準日(計算期間(毎年八月一日から翌年七月三十一日までの期間をいう。以下同じ。)の末日をいう。以下同じ。)において法第七十四条第一項第三号の規定が適用される者である場合は、この限りでない。