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

This is the Markdown twin of https://japanlaw.org/en/acts/505AC0000000031. 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.

Every law on japanlaw.org that Act No. 31 of 2023 amends, and when each change takes effect; promulgated 19 May 2023.

- Number: 令和五年法律第三十一号 (令和5年法律第31号), Act No. 31 of 2023
- Title: Act Partially Amending the Health Insurance Act, etc. to Establish a Sustainable Social Security System for All Generations (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)
- Promulgated: 19 May 2023
- In Japanese: https://japanlaw.org/ja/acts/505AC0000000031
- Changes to Japanese law, by date: https://japanlaw.org/en/changes (as Markdown: https://japanlaw.org/md/en/changes)

## 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

- 19 May 2023: Since replaced.
- 1 April 2024: Since replaced.
- 1 April 2025: Since replaced.
- 1 April 2026: Since replaced.

## Health Insurance Act (健康保険法)

https://japanlaw.org/en/health-insurance-act

- 19 May 2023: Since replaced.
- 1 April 2024: Since replaced.
- 1 April 2026: Since replaced.

## Local Tax Act (地方税法)

https://japanlaw.org/en/local-tax-act

- 19 May 2023: Since replaced.
- 1 January 2024: Since replaced.
- 1 April 2024: Since replaced.

## Long-Term Care Insurance Act (介護保険法)

https://japanlaw.org/en/long-term-care-insurance-act

- 19 May 2023: Since replaced.
- 1 April 2024: Since replaced.
- 1 April 2025: Since replaced.
- 1 April 2026: Since replaced.

## Medical Care Act (医療法)

https://japanlaw.org/en/medical-care-act

- 19 May 2023: Since replaced.
- 1 August 2023: Since replaced.
- 1 April 2024: Since replaced.
- 1 April 2025: Since replaced.
- 1 April 2026: Since replaced.

## National Health Insurance Act (国民健康保険法)

https://japanlaw.org/en/national-health-insurance-act

- 19 May 2023: Since replaced.
- 1 January 2024: Since replaced.
- 1 April 2024: Since replaced.
- 1 April 2025: Since replaced.
- 1 April 2026: Since replaced.

## Public Assistance Act (生活保護法)

https://japanlaw.org/en/public-assistance-act

- 1 April 2024: Since replaced.
- 1 April 2026: Since replaced.

## Residential Basic Book Act (住民基本台帳法)

https://japanlaw.org/en/residential-basic-book-act

- 1 April 2026: Since replaced.

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## Sources

- The dates and the amending law: e-Gov (Digital Agency) (8 records)
- English title of the amending law: Written for this site with AI
- English names of the laws: Japanese Law Translation, Ministry of Justice (8 records)