# 国民健康保険法 / National Health Insurance Act — 第十一条 (Supplementary Provisions, Article 11) - 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: 第十一条 (Supplementary Provisions, Article 11) — address `suppl-4271-31/art-11` - Text in force since: 2026-10-01 - URL (the page that opens at this provision): https://japanlaw.org/ja/national-health-insurance-act/suppl-4271-31/art-11 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/333AC0000000192/suppl-4271-31/art-11 - 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. --- ### 第十一条 suppl-4271-31/art-11 · https://japanlaw.org/ja/national-health-insurance-act/suppl-4271-31/art-11 · https://japanlaw.org/l/333AC0000000192/suppl-4271-31/art-11 **第一項** 平成三十年改正後国保法の規定は、施行日以後に行われた療養について適用し、施行日前に行われた療養については、なお従前の例による。 suppl-4271-31/art-11/par-1 · https://japanlaw.org/ja/national-health-insurance-act/suppl-4271-31/art-11/par-1 · https://japanlaw.org/l/333AC0000000192/suppl-4271-31/art-11/par-1 The provisions of the National Health Insurance Act as Amended in 2018 apply to medical treatment provided on or after the Effective Date, and the provisions then in force continue to govern medical treatment provided before the Effective Date. machine translation, not official **第二項** 平成三十年改正前国保法の規定により市町村が行う保険給付のうち施行日以後に請求される療養の給付に要する費用及び施行日以後に支給する保険給付（療養の給付を除く。）の支給に要する費用については、平成三十年改正後国保法の規定により市町村が行う保険給付に要する費用とみなして、平成三十年改正後国保法第五章の規定を適用する。 suppl-4271-31/art-11/par-2 · https://japanlaw.org/ja/national-health-insurance-act/suppl-4271-31/art-11/par-2 · https://japanlaw.org/l/333AC0000000192/suppl-4271-31/art-11/par-2 With regard to, among the insurance benefits provided by Municipalities pursuant to the provisions of the National Health Insurance Act Before the 2018 Amendment, the expenses required for benefits for medical treatment claimed on or after the Effective Date and the expenses required for the payment of insurance benefits (excluding benefits for medical treatment) paid on or after the Effective Date, the provisions of Chapter V of the National Health Insurance Act as Amended in 2018 apply, deeming them to be expenses required for insurance benefits provided by Municipalities pursuant to the provisions of the National Health Insurance Act as Amended in 2018. machine translation, not official --- ## 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 - claude-sonnet-5-5 — Machine translation, batch national-health-insurance-act-20261017T183826-036, translated 2026-10-18 - This site's parser, version 209 — 国民健康保険法 — structure, counts, cross-references and defined terms, computed 2026-10-17