Municipalities and Societies may, pursuant to Cabinet Order provisions, reduce the ratio of co-payment set forth in Article 42, paragraph (1) by Municipal Ordinance or by constitution.
When the ratio of co-payment is reduced pursuant to the provisions of the preceding paragraph, it shall be sufficient for an insured person who receives benefits for medical treatment in relation to one of the health insurance-covered medical institutions, etc. designated by a Municipality or Society with the consent of their respective establishers, to pay co-payment calculated in accordance with the ratio after such reduction to such health insurance-covered medical institution, etc., notwithstanding the provisions of Article 42, paragraph (1).
In cases where the ratio of co-payment has been reduced pursuant to the provisions of paragraph (1) and when an insured person has received benefits for medical treatment at or from a health insurance-covered medical institution, etc. which is not one of those set forth in the preceding paragraph, Municipalities and Societies must pay to such insured person the difference between the amount of co-payment paid by such insured person to the health insurance-covered medical institution, etc. pursuant to the provisions of Article 42, paragraph (1) and the amount of co-payment calculated pursuant to the ratio after the reduction made pursuant to the provisions of paragraph (1).
The provisions of the preceding Article shall apply mutatis mutandis to the making of co-payment in the case set forth in paragraph (2).
Read this with the articles around it