# 国民健康保険法 / National Health Insurance Act — 第二十五条 (Supplementary Provisions, Article 25)

- 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: 第二十五条 (Supplementary Provisions, Article 25) — address `suppl-4141-102/art-25`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25
- 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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### 第二十五条
<sup>suppl-4141-102/art-25 · https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25</sup>

**第一項**  平成十五年度につき国民健康保険法第六十八条の二第一項の規定により指定を受けた市町村について新国保法第七十条第三項の規定を適用する場合においては、同項第二号ロに規定する額については、同号ロの規定にかかわらず、第一号から第四号までに掲げる額の合算額から第五号に掲げる額を控除した額とする。
<sup>suppl-4141-102/art-25/par-1 · https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1</sup>
In the case of applying the provisions of Article 70, paragraph (3) of the Revised National Health Insurance Act to a Municipality that has been designated, for fiscal year 2003, pursuant to Article 68-2, paragraph (1) of the National Health Insurance Act, the amount prescribed in item (ii), (b) of that paragraph is, notwithstanding the provisions of (b) of that item, the amount obtained by deducting the amount set forth in item (v) from the total sum of the amounts set forth in items (i) through (iv).
<sup>machine translation, not official</sup>

  **一**  政令で定めるところにより、年齢階層ごとに、当該年齢階層に係る新老健法第二十八条第一項第一号に掲げる場合に該当する者の平均一人当たり老人医療費額に当該市町村の当該年齢階層に属する被保険者（同号に掲げる場合に該当する者に限る。）の数を乗じて得た額の合算額の十二分の七に相当する額に、当該市町村に係る附則第十七条第二項に規定する前期確定加入者調整率（以下単に「前期確定加入者調整率」という。）を乗じて得た額の百分の六十六に相当する額として算定した額
  <sup>suppl-4141-102/art-25/par-1/item-1 · https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-1 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-1</sup>
  the amount calculated, pursuant to Cabinet Order, as an amount equivalent to 66 percent of the amount obtained by multiplying the amount equivalent to 7/12 of the total sum of the amounts obtained, for each age bracket, by multiplying the average amount of medical expenses for the elderly per person for persons falling under the cases set forth in Article 28, paragraph (1), item (i) of the Revised Elderly Health Act pertaining to that age bracket by the number of insured persons of that Municipality belonging to that age bracket (limited to persons falling under the cases set forth in that item) by the earlier-period finalized enrollee adjustment rate prescribed in Article 17, paragraph (2) of the Supplementary Provisions pertaining to that Municipality (hereinafter simply referred to as the "earlier-period finalized enrollee adjustment rate")
  <sup>machine translation, not official</sup>

  **二**  政令で定めるところにより、年齢階層ごとに、当該年齢階層に係る新老健法第二十八条第一項第二号に掲げる場合に該当する者の平均一人当たり老人医療費額に当該市町村の当該年齢階層に属する被保険者（同号に掲げる場合に該当する者に限る。）の数を乗じて得た額の合算額の十二分の七に相当する額に、当該市町村に係る前期確定加入者調整率を乗じて得た額として算定した額
  <sup>suppl-4141-102/art-25/par-1/item-2 · https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-2 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-2</sup>
  the amount calculated, pursuant to Cabinet Order, as the amount obtained by multiplying the amount equivalent to 7/12 of the total sum of the amounts obtained, for each age bracket, by multiplying the average amount of medical expenses for the elderly per person for persons falling under the cases set forth in Article 28, paragraph (1), item (ii) of the Revised Elderly Health Act pertaining to that age bracket by the number of insured persons of that Municipality belonging to that age bracket (limited to persons falling under the cases set forth in that item) by the earlier-period finalized enrollee adjustment rate pertaining to that Municipality
  <sup>machine translation, not official</sup>

  **三**  政令で定めるところにより、年齢階層ごとに、当該年齢階層に係る新老健法第二十八条第一項第一号に掲げる場合に該当する者の平均一人当たり老人医療費額に当該市町村の当該年齢階層に属する被保険者（同号に掲げる場合に該当する者に限る。）の数を乗じて得た額の合算額の十二分の五に相当する額に、当該市町村に係る附則第十七条第六項に規定する後期確定加入者調整率（以下単に「後期確定加入者調整率」という。）を乗じて得た額の百分の六十二に相当する額として算定した額
  <sup>suppl-4141-102/art-25/par-1/item-3 · https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-3 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-3</sup>
  the amount calculated, pursuant to Cabinet Order, as an amount equivalent to 62 percent of the amount obtained by multiplying the amount equivalent to 5/12 of the total sum of the amounts obtained, for each age bracket, by multiplying the average amount of medical expenses for the elderly per person for persons falling under the cases set forth in Article 28, paragraph (1), item (i) of the Revised Elderly Health Act pertaining to that age bracket by the number of insured persons of that Municipality belonging to that age bracket (limited to persons falling under the cases set forth in that item) by the later-period finalized enrollee adjustment rate prescribed in Article 17, paragraph (6) of the Supplementary Provisions pertaining to that Municipality (hereinafter simply referred to as the "later-period finalized enrollee adjustment rate")
  <sup>machine translation, not official</sup>

  **四**  政令で定めるところにより、年齢階層ごとに、当該年齢階層に係る新老健法第二十八条第一項第二号に掲げる場合に該当する者の平均一人当たり老人医療費額に当該市町村の当該年齢階層に属する被保険者（同号に掲げる場合に該当する者に限る。）の数を乗じて得た額の合算額の十二分の五に相当する額に、当該市町村に係る後期確定加入者調整率を乗じて得た額として算定した額
  <sup>suppl-4141-102/art-25/par-1/item-4 · https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-4 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-4</sup>
  the amount calculated, pursuant to Cabinet Order, as the amount obtained by multiplying the amount equivalent to 5/12 of the total sum of the amounts obtained, for each age bracket, by multiplying the average amount of medical expenses for the elderly per person for persons falling under the cases set forth in Article 28, paragraph (1), item (ii) of the Revised Elderly Health Act pertaining to that age bracket by the number of insured persons of that Municipality belonging to that age bracket (limited to persons falling under the cases set forth in that item) by the later-period finalized enrollee adjustment rate pertaining to that Municipality
  <sup>machine translation, not official</sup>

  **五**  前各号に掲げる額の合算額に、当該市町村に係る退職被保険者等加入割合を乗じて得た額
  <sup>suppl-4141-102/art-25/par-1/item-5 · https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-5 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-5</sup>
  the amount obtained by multiplying the total sum of the amounts set forth in the preceding items by the enrolment ratio of retired insured persons, etc. pertaining to that Municipality
  <sup>machine translation, not official</sup>

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## Cites
- suppl-4141-102/art-25/par-1: 第一号から第四号まで → 国民健康保険法 附則第二十五条第一項第一号 (Supplementary Provisions, Article 25, paragraph (1), item (i)), suppl-4141-102/art-25/par-1/item-1 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-1 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-1
- suppl-4141-102/art-25/par-1: 第一号から第四号まで → 国民健康保険法 附則第二十五条第一項第二号 (Supplementary Provisions, Article 25, paragraph (1), item (ii)), suppl-4141-102/art-25/par-1/item-2 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-2 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-2
- suppl-4141-102/art-25/par-1: 第一号から第四号まで → 国民健康保険法 附則第二十五条第一項第三号 (Supplementary Provisions, Article 25, paragraph (1), item (iii)), suppl-4141-102/art-25/par-1/item-3 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-3 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-3
- suppl-4141-102/art-25/par-1: 第一号から第四号まで → 国民健康保険法 附則第二十五条第一項第四号 (Supplementary Provisions, Article 25, paragraph (1), item (iv)), suppl-4141-102/art-25/par-1/item-4 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-4 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-4
- suppl-4141-102/art-25/par-1: 第五号 → 国民健康保険法 附則第二十五条第一項第五号 (Supplementary Provisions, Article 25, paragraph (1), item (v)), suppl-4141-102/art-25/par-1/item-5 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-5 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-5
- suppl-4141-102/art-25/par-1/item-5: 前各号 → 国民健康保険法 附則第二十五条第一項第一号 (Supplementary Provisions, Article 25, paragraph (1), item (i)), suppl-4141-102/art-25/par-1/item-1 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-1 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-1
- suppl-4141-102/art-25/par-1/item-5: 前各号 → 国民健康保険法 附則第二十五条第一項第二号 (Supplementary Provisions, Article 25, paragraph (1), item (ii)), suppl-4141-102/art-25/par-1/item-2 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-2 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-2
- suppl-4141-102/art-25/par-1/item-5: 前各号 → 国民健康保険法 附則第二十五条第一項第三号 (Supplementary Provisions, Article 25, paragraph (1), item (iii)), suppl-4141-102/art-25/par-1/item-3 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-3 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-3
- suppl-4141-102/art-25/par-1/item-5: 前各号 → 国民健康保険法 附則第二十五条第一項第四号 (Supplementary Provisions, Article 25, paragraph (1), item (iv)), suppl-4141-102/art-25/par-1/item-4 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-4 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-4

## Cited by

4 provisions cite this one. No official source publishes this direction.

- 国民健康保険法 附則第二十五条第一項 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1
- 国民健康保険法 附則第二十五条第一項第五号 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-25/par-1/item-5 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-25/par-1/item-5
- 国民健康保険法 附則第二十六条第一項 — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-26/par-1 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-26/par-1
- 国民健康保険法 附則第三十六条第一項（政令への委任） — https://japanlaw.org/en/national-health-insurance-act/suppl-4141-102/art-36/par-1 · https://japanlaw.org/l/333AC0000000192/suppl-4141-102/art-36/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
- claude-sonnet-5-5 — Machine translation, batch national-health-insurance-act-20261017T183826-022, 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
