# Changes to Japanese law on 1 March 2027

This is the Markdown twin of https://japanlaw.org/en/changes/2027-03-01. Every law, and how to address a provision: https://japanlaw.org/llms.txt. The same laws as MCP tools (no sign-in): https://japanlaw.org/mcp.

What changes on 1 March 2027 in 4 laws on this site: for each, the Act that amends it and the wording before and after, in Japanese and English.

- Health Insurance Act (健康保険法) — https://japanlaw.org/en/health-insurance-act
  - 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)
    The Act, and every law here it amends: https://japanlaw.org/en/acts/508AC0000000031 (as Markdown: https://japanlaw.org/md/en/acts/508AC0000000031)
    What changes: https://japanlaw.org/en/health-insurance-act/amendments/20270301_508AC0000000031; the law as amended, in Markdown: https://japanlaw.org/md/en/health-insurance-act/amendments/20270301_508AC0000000031/text
- National Health Insurance Act (国民健康保険法) — https://japanlaw.org/en/national-health-insurance-act
  - 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)
    The Act, and every law here it amends: https://japanlaw.org/en/acts/508AC0000000031 (as Markdown: https://japanlaw.org/md/en/acts/508AC0000000031)
    What changes: https://japanlaw.org/en/national-health-insurance-act/amendments/20270301_508AC0000000031; the law as amended, in Markdown: https://japanlaw.org/md/en/national-health-insurance-act/amendments/20270301_508AC0000000031/text
- Act on Measures against Infringement of Rights, etc. Arising from the Distribution of Information through Specified Telecommunications (特定電気通信による情報の流通によって発生する権利侵害等への対処に関する法律) — https://japanlaw.org/en/information-distribution-platform-act
  - Amended by Act Partially Amending the Public Offices Election Act and the Act on Measures against Infringement of Rights, etc. Arising from the Distribution of Information through Specified Telecommunications (Act No. 58 of 2026) (公職選挙法及び特定電気通信による情報の流通によって発生する権利侵害等への対処に関する法律の一部を改正する法律)
    The Act, and every law here it amends: https://japanlaw.org/en/acts/508AC1000000058 (as Markdown: https://japanlaw.org/md/en/acts/508AC1000000058)
    What changes: https://japanlaw.org/en/information-distribution-platform-act/amendments/20270301_508AC1000000058; the law as amended, in Markdown: https://japanlaw.org/md/en/information-distribution-platform-act/amendments/20270301_508AC1000000058/text
- Act on Assurance of Medical Care for Elderly People (高齢者の医療の確保に関する法律) — https://japanlaw.org/en/elderly-medical-care-act
  - 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)
    The Act, and every law here it amends: https://japanlaw.org/en/acts/508AC0000000031 (as Markdown: https://japanlaw.org/md/en/acts/508AC0000000031)
    What changes: https://japanlaw.org/en/elderly-medical-care-act/amendments/20270301_508AC0000000031; the law as amended, in Markdown: https://japanlaw.org/md/en/elderly-medical-care-act/amendments/20270301_508AC0000000031/text

Every day: https://japanlaw.org/en/changes

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## Sources

- Amendments and their dates: e-Gov (Digital Agency) (4 records)
- English names of the laws: Japanese Law Translation, Ministry of Justice (3 records)
- English names of the laws: Written for this site with AI
- English titles of the amending laws: Written for this site with AI