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National Health Insurance Act

国民健康保険法（こくみんけんこうほけんほう）

Every amendment to this law that e-Gov records and, for those whose changes this site has read, what each one changes, provision by provision: the wording before and after, in Japanese and in English, with the words that change marked.

Promulgated, not yet in force

  • 1 March 2027

    in 4 months

    Amended by

    Act Partially Amending the Health Insurance Act, etc. (Act No. 31 of 2026)

    健康保険法等の一部を改正する法律

    25 provisions changed · 12 provisions added · 1 provision in the supplementary provisions

    See what changes

  • 1 April 2027

    in 5 months

    Amended by

    Act Partially Amending the Medical Care Act, etc. (Act No. 87 of 2025)

    医療法等の一部を改正する法律

    1 provision changed · 1 provision in the supplementary provisions

    See what changes

  • 1 April 2027

    in 5 months

    Amended by

    Act Partially Amending the Health Insurance Act, etc. (Act No. 31 of 2026)

    健康保険法等の一部を改正する法律

    12 provisions changed · 11 provisions added · 5 provisions removed · 3 provisions in the supplementary provisions

    See what changes

  • 1 April 2027

    in 5 months

    Amended by

    Act Partially Amending the Social Welfare Act, etc. (Act No. 51 of 2026)

    社会福祉法等の一部を改正する法律

    3 provisions changed · 6 provisions in the supplementary provisions

    See what changes

  • 1 April 2028

    in 17 months

    Amended by

    Act Partially Amending the Health Insurance Act, etc. (Act No. 31 of 2026)

    健康保険法等の一部を改正する法律

    4 provisions changed · 1 provision in the supplementary provisions

    See what changes

  • By 4 June 2028

    at the latest, in 2 years

    Amended by

    Act Partially Amending the Health Insurance Act, etc. (Act No. 31 of 2026)

    健康保険法等の一部を改正する法律

    34 provisions changed · 31 provisions added · 6 provisions in the supplementary provisions

    See what changes

  • By 24 June 2028

    at the latest, in 2 years

    Amended by

    Act Partially Amending the Social Welfare Act, etc. (Act No. 51 of 2026)

    社会福祉法等の一部を改正する法律

    1 provision changed · 1 provision in the supplementary provisions

    See what changes

  • By 11 December 2028

    at the latest, in 2 years

    Amended by

    Act Partially Amending the Medical Care Act, etc. (Act No. 87 of 2025)

    医療法等の一部を改正する法律

    12 provisions changed

    See what changes

  • By 24 June 2029

    at the latest, in 3 years

    Amended by

    Act Partially Amending the Social Welfare Act, etc. (Act No. 51 of 2026)

    社会福祉法等の一部を改正する法律

    1 provision changed

    See what changes

Other amendments e-Gov records

42 more amendments to this law that e-Gov records with no page of their own here: when each took effect, and the amending law. What each changed is not on this site yet.

  • 1 October 2026

    The text on this site

    Act Partially Amending the Medical Care Act, etc. (Act No. 87 of 2025)

    医療法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 August 2026

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. (Act No. 31 of 2026)

    健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 5 June 2026

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. (Act No. 31 of 2026)

    健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 April 2026

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Establish a Sustainable Social Security System for All Generations (Act No. 31 of 2023)

    全世代対応型の持続可能な社会保障制度を構築するための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 April 2026

    Since replaced

    Act Partially Amending the Act on Support for Children and Child-rearing, etc. (Act No. 47 of 2024)

    子ども・子育て支援法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 12 December 2025

    Since replaced

    Act Partially Amending the Medical Care Act, etc. (Act No. 87 of 2025)

    医療法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 October 2025

    Since replaced

    Act Partially Amending the Act on Providing Comprehensive Support for the Daily Life and Life in Society of Persons with Disabilities, etc. (Act No. 104 of 2022)

    障害者の日常生活及び社会生活を総合的に支援するための法律等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 June 2025

    Since replaced

    Act on the Arrangement of Related Acts upon the Enforcement of the Act Partially Amending the Penal Code, etc. (Act No. 68 of 2022)

    刑法等の一部を改正する法律の施行に伴う関係法律の整理等に関する法律

    The text after this amendment, on e-Gov

  • 1 April 2025

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Establish a Sustainable Social Security System for All Generations (Act No. 31 of 2023)

    全世代対応型の持続可能な社会保障制度を構築するための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 2 December 2024

    Since replaced

    Act Partially Amending the Act on the Use of Numbers to Identify a Specific Individual in Administrative Procedures, etc. (Act No. 48 of 2023)

    行政手続における特定の個人を識別するための番号の利用等に関する法律等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 October 2024

    Since replaced

    Act Partially Amending the Act on Support for Children and Child-rearing, etc. (Act No. 47 of 2024)

    子ども・子育て支援法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 12 June 2024

    Since replaced

    Act Partially Amending the Act on Support for Children and Child-rearing, etc. (Act No. 47 of 2024)

    子ども・子育て支援法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 April 2024

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Establish a Social Security System for All Generations (Act No. 66 of 2021)

    全世代対応型の社会保障制度を構築するための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 April 2024

    Since replaced

    Act Partially Amending the Act on the Prevention of Infectious Diseases and Medical Care for Patients with Infectious Diseases, etc. (Act No. 96 of 2022)

    感染症の予防及び感染症の患者に対する医療に関する法律等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 April 2024

    Since replaced

    Act Partially Amending the Local Autonomy Act (Act No. 19 of 2023)

    地方自治法の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 April 2024

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Establish a Sustainable Social Security System for All Generations (Act No. 31 of 2023)

    全世代対応型の持続可能な社会保障制度を構築するための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 March 2024

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Establish a Social Security System for All Generations (Act No. 66 of 2021)

    全世代対応型の社会保障制度を構築するための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 January 2024

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Establish a Sustainable Social Security System for All Generations (Act No. 31 of 2023)

    全世代対応型の持続可能な社会保障制度を構築するための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 9 June 2023

    Since replaced

    Act Partially Amending the Act on the Use of Numbers to Identify a Specific Individual in Administrative Procedures, etc. (Act No. 48 of 2023)

    行政手続における特定の個人を識別するための番号の利用等に関する法律等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 19 May 2023

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Establish a Sustainable Social Security System for All Generations (Act No. 31 of 2023)

    全世代対応型の持続可能な社会保障制度を構築するための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 11 May 2023

    Since replaced

    Act on the Arrangement of Related Acts for the Formation of a Digital Society (Act No. 37 of 2021)

    デジタル社会の形成を図るための関係法律の整備に関する法律

    The text after this amendment, on e-Gov

  • 1 April 2023

    Since replaced

    Act on Arrangement of Relevant Acts Incidental to Enforcement of the Act for Establishment of the Children and Families Agency (Act No. 76 of 2022)

    こども家庭庁設置法の施行に伴う関係法律の整備に関する法律

    The text after this amendment, on e-Gov

  • 9 December 2022

    Since replaced

    Act Partially Amending the Act on the Prevention of Infectious Diseases and Medical Care for Patients with Infectious Diseases, etc. (Act No. 96 of 2022)

    感染症の予防及び感染症の患者に対する医療に関する法律等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 22 June 2022

    Since replaced

    Act on Arrangement of Relevant Acts Incidental to Enforcement of the Act for Establishment of the Children and Families Agency (Act No. 76 of 2022)

    こども家庭庁設置法の施行に伴う関係法律の整備に関する法律

    The text after this amendment, on e-Gov

  • 17 June 2022

    Since replaced

    Act on the Arrangement of Related Acts upon the Enforcement of the Act Partially Amending the Penal Code, etc. (Act No. 68 of 2022)

    刑法等の一部を改正する法律の施行に伴う関係法律の整理等に関する法律

    The text after this amendment, on e-Gov

  • 1 April 2022

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Establish a Social Security System for All Generations (Act No. 66 of 2021)

    全世代対応型の社会保障制度を構築するための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 January 2022

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Establish a Social Security System for All Generations (Act No. 66 of 2021)

    全世代対応型の社会保障制度を構築するための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 11 June 2021

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Establish a Social Security System for All Generations (Act No. 66 of 2021)

    全世代対応型の社会保障制度を構築するための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 19 May 2021

    Since replaced

    Act on the Arrangement of Related Acts for the Formation of a Digital Society (Act No. 37 of 2021)

    デジタル社会の形成を図るための関係法律の整備に関する法律

    The text after this amendment, on e-Gov

  • 1 April 2021

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Ensure the Proper and Efficient Administration of the Medical Insurance System (Act No. 9 of 2019)

    医療保険制度の適正かつ効率的な運営を図るための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 October 2020

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Ensure the Proper and Efficient Administration of the Medical Insurance System (Act No. 9 of 2019)

    医療保険制度の適正かつ効率的な運営を図るための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 September 2020

    Since replaced

    Act Partially Amending the Employment Insurance Act, etc. (Act No. 14 of 2020)

    雇用保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 April 2020

    Since replaced

    Act on the Arrangement of Related Acts upon the Enforcement of the Act Partially Amending the Civil Code (Act No. 45 of 2017)

    民法の一部を改正する法律の施行に伴う関係法律の整備等に関する法律

    The text after this amendment, on e-Gov

  • 1 April 2020

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Ensure the Proper and Efficient Administration of the Medical Insurance System (Act No. 9 of 2019)

    医療保険制度の適正かつ効率的な運営を図るための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 31 March 2020

    Since replaced

    Act Partially Amending the Act on Special Provisions for the Merger of Municipalities (Act No. 11 of 2020)

    市町村の合併の特例に関する法律の一部を改正する法律

    The text after this amendment, on e-Gov

  • 31 March 2020

    Since replaced

    Act Partially Amending the Employment Insurance Act, etc. (Act No. 14 of 2020)

    雇用保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 22 May 2019

    Since replaced

    Act Partially Amending the Health Insurance Act, etc. to Ensure the Proper and Efficient Administration of the Medical Insurance System (Act No. 9 of 2019)

    医療保険制度の適正かつ効率的な運営を図るための健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 April 2018

    Since replaced

    Act Partially Amending the National Health Insurance Act, etc. to Establish a Sustainable Medical Insurance System (Act No. 31 of 2015)

    持続可能な医療保険制度を構築するための国民健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 April 2018

    Since replaced

    Act Partially Amending the Act on Providing Comprehensive Support for the Daily Life and Life in Society of Persons with Disabilities and the Child Welfare Act (Act No. 65 of 2016)

    障害者の日常生活及び社会生活を総合的に支援するための法律及び児童福祉法の一部を改正する法律

    The text after this amendment, on e-Gov

  • 1 April 2018

    Since replaced

    Act on the Development of Related Acts for the Promotion of Reform to Enhance Regional Autonomy and Independence (Act No. 25 of 2017)

    地域の自主性及び自立性を高めるための改革の推進を図るための関係法律の整備に関する法律

    The text after this amendment, on e-Gov

  • 2 June 2017

    Since replaced

    Act on the Arrangement of Related Acts upon the Enforcement of the Act Partially Amending the Civil Code (Act No. 45 of 2017)

    民法の一部を改正する法律の施行に伴う関係法律の整備等に関する法律

    The text after this amendment, on e-Gov

  • 1 April 2017

    Since replaced

    Act Partially Amending the National Health Insurance Act, etc. to Establish a Sustainable Medical Insurance System (Act No. 31 of 2015)

    持続可能な医療保険制度を構築するための国民健康保険法等の一部を改正する法律

    The text after this amendment, on e-Gov