# Act No. 87 of 2025: Act Partially Amending the Medical Care Act, etc. This is the Markdown twin of https://japanlaw.org/en/acts/507AC0000000087. 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. 87 of 2025 amends, and when each change takes effect; promulgated 12 December 2025. - Number: 令和七年法律第八十七号 (令和7年法律第87号), Act No. 87 of 2025 - Title: Act Partially Amending the Medical Care Act, etc. (医療法等の一部を改正する法律) - Promulgated: 12 December 2025 - In Japanese: https://japanlaw.org/ja/acts/507AC0000000087 - 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 - 12 December 2025: Since replaced. - 1 October 2026: In force. The law in force: https://japanlaw.org/en/elderly-medical-care-act; in Markdown: https://japanlaw.org/md/en/elderly-medical-care-act - 1 April 2027: Not yet in force. 6 provisions changed · 1 provision in the supplementary provisions. What it changes: https://japanlaw.org/en/elderly-medical-care-act/amendments/20270401_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/elderly-medical-care-act/amendments/20270401_507AC0000000087/text - By 11 December 2028: Not yet in force. 56 provisions changed · 24 provisions added · 2 articles renumbered. What it changes: https://japanlaw.org/en/elderly-medical-care-act/amendments/20281211_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/elderly-medical-care-act/amendments/20281211_507AC0000000087/text ## Health Insurance Act (健康保険法) https://japanlaw.org/en/health-insurance-act - 12 December 2025: Since replaced. - 1 April 2026: Since replaced. - 1 October 2026: In force. The law in force: https://japanlaw.org/en/health-insurance-act; in Markdown: https://japanlaw.org/md/en/health-insurance-act - 1 April 2027: Not yet in force. 3 provisions changed · 3 provisions added · 1 provision in the supplementary provisions. What it changes: https://japanlaw.org/en/health-insurance-act/amendments/20270401_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/health-insurance-act/amendments/20270401_507AC0000000087/text - By 11 December 2028: Not yet in force. 17 provisions changed · 14 provisions added · 2 provisions in the supplementary provisions · 4 articles renumbered. What it changes: https://japanlaw.org/en/health-insurance-act/amendments/20281211_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/health-insurance-act/amendments/20281211_507AC0000000087/text ## Local Tax Act (地方税法) https://japanlaw.org/en/local-tax-act - 12 December 2025: Since replaced. - 1 April 2026: Since replaced. - 1 October 2026: Since replaced. - 1 April 2027: Not yet in force. 1 provision in the supplementary provisions. What it changes: https://japanlaw.org/en/local-tax-act/amendments/20270401_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/local-tax-act/amendments/20270401_507AC0000000087/text - By 11 December 2028: Not yet in force. 1 provision changed · 3 provisions in the supplementary provisions. What it changes: https://japanlaw.org/en/local-tax-act/amendments/20281211_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/local-tax-act/amendments/20281211_507AC0000000087/text ## Long-Term Care Insurance Act (介護保険法) https://japanlaw.org/en/long-term-care-insurance-act - 12 December 2025: Since replaced. - 1 April 2026: Since replaced. - 1 October 2026: In force. The law in force: https://japanlaw.org/en/long-term-care-insurance-act; in Markdown: https://japanlaw.org/md/en/long-term-care-insurance-act - 1 April 2027: Not yet in force. 2 provisions changed · 1 provision in the supplementary provisions. What it changes: https://japanlaw.org/en/long-term-care-insurance-act/amendments/20270401_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/long-term-care-insurance-act/amendments/20270401_507AC0000000087/text - By 11 December 2028: Not yet in force. 8 provisions changed · 14 provisions added · 4 articles renumbered. What it changes: https://japanlaw.org/en/long-term-care-insurance-act/amendments/20281211_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/long-term-care-insurance-act/amendments/20281211_507AC0000000087/text ## Medical Care Act (医療法) https://japanlaw.org/en/medical-care-act - 12 December 2025: Since replaced. - 1 April 2026: Since replaced. - 1 October 2026: In force. The law in force: https://japanlaw.org/en/medical-care-act; in Markdown: https://japanlaw.org/md/en/medical-care-act - 1 April 2027: Not yet in force. 62 provisions changed · 36 provisions added · 6 provisions removed · 5 provisions in the supplementary provisions. What it changes: https://japanlaw.org/en/medical-care-act/amendments/20270401_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/medical-care-act/amendments/20270401_507AC0000000087/text - 1 October 2027: Not yet in force. 1 provision changed. What it changes: https://japanlaw.org/en/medical-care-act/amendments/20271001_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/medical-care-act/amendments/20271001_507AC0000000087/text - By 11 December 2027: Not yet in force. 4 provisions changed · 5 provisions added. What it changes: https://japanlaw.org/en/medical-care-act/amendments/20271211_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/medical-care-act/amendments/20271211_507AC0000000087/text - 1 April 2028: Not yet in force. 7 provisions changed · 1 provision added · 2 provisions in the supplementary provisions. What it changes: https://japanlaw.org/en/medical-care-act/amendments/20280401_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/medical-care-act/amendments/20280401_507AC0000000087/text ## Act on the Use of Numbers to Identify a Specific Individual in Administrative Procedures (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) https://japanlaw.org/en/my-number-act - 12 December 2025: Since replaced. - 1 October 2026: In force. The law in force: https://japanlaw.org/en/my-number-act; in Markdown: https://japanlaw.org/md/en/my-number-act ## National Health Insurance Act (国民健康保険法) https://japanlaw.org/en/national-health-insurance-act - 12 December 2025: Since replaced. - 1 October 2026: In force. The law in force: https://japanlaw.org/en/national-health-insurance-act; in Markdown: https://japanlaw.org/md/en/national-health-insurance-act - 1 April 2027: Not yet in force. 1 provision changed · 1 provision in the supplementary provisions. What it changes: https://japanlaw.org/en/national-health-insurance-act/amendments/20270401_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/national-health-insurance-act/amendments/20270401_507AC0000000087/text - By 11 December 2028: Not yet in force. 12 provisions changed. What it changes: https://japanlaw.org/en/national-health-insurance-act/amendments/20281211_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/national-health-insurance-act/amendments/20281211_507AC0000000087/text ## Public Assistance Act (生活保護法) https://japanlaw.org/en/public-assistance-act - 1 October 2026: In force. The law in force: https://japanlaw.org/en/public-assistance-act; in Markdown: https://japanlaw.org/md/en/public-assistance-act - 1 April 2027: Not yet in force. 1 provision changed. What it changes: https://japanlaw.org/en/public-assistance-act/amendments/20270401_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/public-assistance-act/amendments/20270401_507AC0000000087/text ## Residential Basic Book Act (住民基本台帳法) https://japanlaw.org/en/residential-basic-book-act - 12 December 2025: Since replaced. - 1 October 2026: Since replaced. 1 provision changed · 2 provisions in the supplementary provisions. What it changes: https://japanlaw.org/en/residential-basic-book-act/amendments/20261001_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/residential-basic-book-act/amendments/20261001_507AC0000000087/text - 1 April 2027: Not yet in force. 3 provisions changed · 5 provisions in the supplementary provisions. What it changes: https://japanlaw.org/en/residential-basic-book-act/amendments/20270401_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/residential-basic-book-act/amendments/20270401_507AC0000000087/text - By 11 December 2028: Not yet in force. 2 provisions changed · 1 provision added · 1 provision in the supplementary provisions. What it changes: https://japanlaw.org/en/residential-basic-book-act/amendments/20281211_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/residential-basic-book-act/amendments/20281211_507AC0000000087/text - By 11 December 2029: Not yet in force. 1 provision changed. What it changes: https://japanlaw.org/en/residential-basic-book-act/amendments/20291211_507AC0000000087; the law as amended, in Markdown: https://japanlaw.org/md/en/residential-basic-book-act/amendments/20291211_507AC0000000087/text ## Act on Special Measures Concerning Taxation (租税特別措置法) https://japanlaw.org/en/special-taxation-measures-act - 1 April 2026: Since replaced. --- ## Sources - The dates and the amending law: e-Gov (Digital Agency) (10 records) - English title of the amending law: Written for this site with AI - English names of the laws: Japanese Law Translation, Ministry of Justice (10 records)