# 国民健康保険法 / National Health Insurance Act — 第五十七条 (Article 57)

- Law: 国民健康保険法 (National Health Insurance Act), 昭和三十三年法律第百九十二号
- English title "National Health Insurance Act": Ministry of Justice translation
- Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say.
- Provision: 第五十七条 (Article 57)（世帯主又は組合員でない被保険者に係る一部負担金等） — address `art-57`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/ja/national-health-insurance-act/art-57
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/333AC0000000192/art-57
- Every provision below carries its address and both URLs on the line under it.
- Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below.

Only the Japanese as published by the government has legal effect; the text
below is a copy of it. Every English rendering below is a translation and
says which kind: the Ministry of Justice's translation, or this
site's machine translation, whose model and date the Sources list names.
They are never merged and never substituted for one another.

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### 第五十七条（世帯主又は組合員でない被保険者に係る一部負担金等） — (Co-payment Relating to an Insured Person Who is Not the Householder or Society Member)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-57 · https://japanlaw.org/ja/national-health-insurance-act/art-57 · https://japanlaw.org/l/333AC0000000192/art-57</sup>

  **第一項**  一部負担金の支払又は納付、第四十三条第三項又は前条第二項の規定による差額の支給及び療養費の支給に関しては、当該疾病又は負傷が世帯主又は組合員でない被保険者に係るものであるときは、これらの事項に関する各本条の規定にかかわらず、当該被保険者の属する世帯の世帯主又は組合員が一部負担金を支払い、又は納付すべき義務を負い、及び当該世帯主又は組合員に対して第四十三条第三項若しくは前条第二項の規定による差額又は療養費を支給するものとする。
  <sup>art-57/par-1 · https://japanlaw.org/ja/national-health-insurance-act/art-57/par-1 · https://japanlaw.org/l/333AC0000000192/art-57/par-1</sup>
  In making any co-payment or in paying any difference or medical expenses pursuant to the provisions of paragraph (3) of Article 43 or paragraph (2) of the preceding Article, when the relevant illness or injury is of an insured person who is not the Householder or Society member, the Householder or Society member of the household to which such insured person belongs shall make, or be obligated to make, co-payment and shall receive payment of the difference or medical expenses pursuant to paragraph (3) of Article 43 or paragraph (2) of the preceding Article, notwithstanding the provisions of the respective Articles pertaining to these matters.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

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## Cites
- art-57/par-1: 第四十三条第三項 → 国民健康保険法 第四十三条第三項 (Article 43, paragraph (3)), art-43/par-3 — https://japanlaw.org/ja/national-health-insurance-act/art-43/par-3 · https://japanlaw.org/l/333AC0000000192/art-43/par-3
- art-57/par-1: 前条第二項 → 国民健康保険法 第五十六条第二項 (Article 56, paragraph (2)), art-56/par-2 — https://japanlaw.org/ja/national-health-insurance-act/art-56/par-2 · https://japanlaw.org/l/333AC0000000192/art-56/par-2

## Cited by

1 provision cites this one. No official source publishes this direction.

- 国民健康保険法 第四十五条第一項（保険医療機関等の診療報酬） — https://japanlaw.org/ja/national-health-insurance-act/art-45/par-1 · https://japanlaw.org/l/333AC0000000192/art-45/par-1

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 国民健康保険法 — the text in force from 2026-10-01 (https://laws.e-gov.go.jp/law/333AC0000000192/20261001_507AC0000000087), retrieved 2026-10-17
- Japanese Law Translation Database System, Ministry of Justice (法務省) — National Health Insurance Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/2453/tb), retrieved 2026-10-17
- This site's parser, version 209 — 国民健康保険法 — structure, counts, cross-references and defined terms, computed 2026-10-17
