# 国民健康保険法 / National Health Insurance Act — 第十八条 (Supplementary Provisions, Article 18)

- 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: 第十八条 (Supplementary Provisions, Article 18) — address `suppl-4061-56/art-18`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/en/national-health-insurance-act/suppl-4061-56/art-18
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/333AC0000000192/suppl-4061-56/art-18
- 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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### 第十八条
<sup>suppl-4061-56/art-18 · https://japanlaw.org/en/national-health-insurance-act/suppl-4061-56/art-18 · https://japanlaw.org/l/333AC0000000192/suppl-4061-56/art-18</sup>

**第一項**  新国保法第五十八条第一項の規定は、出産の日が施行日以後である被保険者及び被保険者であった者について適用し、出産の日が施行日前である被保険者及び被保険者であった者の出産に係る給付については、なお従前の例による。
<sup>suppl-4061-56/art-18/par-1 · https://japanlaw.org/en/national-health-insurance-act/suppl-4061-56/art-18/par-1 · https://japanlaw.org/l/333AC0000000192/suppl-4061-56/art-18/par-1</sup>
The provisions of Article 58, paragraph (1) of the Revised National Health Insurance Act apply to insured persons and former insured persons whose date of childbirth is on or after the Effective Date, and with regard to benefits pertaining to the childbirth of insured persons and former insured persons whose date of childbirth is before the Effective Date, the provisions then in force continue to govern.
<sup>machine translation, not official</sup>

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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
- claude-sonnet-5-5 — Machine translation, batch national-health-insurance-act-20261017T183826-017, 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