# 国民健康保険法 / National Health Insurance Act — 第二十条 (Article 20)

- 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: 第二十条 (Article 20)（資格取得の時期） — address `art-20`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/ja/national-health-insurance-act/art-20
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/333AC0000000192/art-20
- 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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### 第二十条（資格取得の時期） — (Time of Acquisition of Eligibility)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-20 · https://japanlaw.org/ja/national-health-insurance-act/art-20 · https://japanlaw.org/l/333AC0000000192/art-20</sup>

  **第一項**  組合が行う国民健康保険の被保険者は、当該組合の組合員若しくは組合員の世帯に属する者となつた日又は第六条各号（第十号を除く。）のいずれにも該当しなくなつた日若しくは他の組合が行う国民健康保険の被保険者でなくなつた日から、その資格を取得する。
  <sup>art-20/par-1 · https://japanlaw.org/ja/national-health-insurance-act/art-20/par-1 · https://japanlaw.org/l/333AC0000000192/art-20/par-1</sup>
  An insured person under the national health insurance program provided by a Society shall become eligible as such on the day on which said person becomes a member of said Society or on the first day on which said person belongs to such member's household or on which said person no longer falls under any of the items (excluding item (x)) of Article 6 or on the day on which said person ceases to be an insured person under the National Health Insurance provided by another Society.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

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## Cites
- art-20/par-1: 第六条 → 国民健康保険法 第六条 (Article 6), art-6 — https://japanlaw.org/ja/national-health-insurance-act/art-6 · https://japanlaw.org/l/333AC0000000192/art-6
- art-20/par-1: 第十号 → 国民健康保険法 第六条第一項第十号 (Article 6, paragraph (1), item (x)), art-6/par-1/item-10 — https://japanlaw.org/ja/national-health-insurance-act/art-6/par-1/item-10 · https://japanlaw.org/l/333AC0000000192/art-6/par-1/item-10

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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