❓ What's the measure?
On August 21, 2026, the Japan Health Insurance Association (JHIA, "Kyokai Kenpo") announced that people affected by the heavy rain of July 17–18, 2026 can receive medical treatment even without their My Number insurance card or Certificate of Eligibility (shikaku kakuninsho). This covers people who evacuated leaving the card at home, or whose card was lost or damaged by flooding. At the hospital or clinic reception desk, simply state four things — (1) your full name, (2) date of birth, (3) contact details such as a phone number, and (4) the name of the company you work for — and you will be treated at your normal cost-sharing rate. Previously, eligibility was confirmed by presenting a physical insurance card. Paper health insurance cards were abolished in 2026, and eligibility is now confirmed via the My Number insurance card or a Certificate of Eligibility. Because neither is easy to carry out during an emergency evacuation, this verbal-declaration exception was set up. It applies to residents of municipalities designated under the Disaster Relief Act — for this rain event, Ashikaga City in Tochigi Prefecture. The current list of designated municipalities is published on the Cabinet Office website.
💡 Key points to remember
1At the reception desk, state four things: your full name, date of birth, contact details (phone number), and the name of the company you work for. Note them down on paper or your phone in advance.
2Knowing your employer's official name makes things go smoothly. You can check it on a payslip, employee ID, or a company email saved on your phone.
3This applies to victims in municipalities designated under the Disaster Relief Act — Ashikaga City, Tochigi for this event. Check the Cabinet Office website for the current list.
4If you are insured elsewhere (National Health Insurance, a company health insurance society, or a mutual aid association), ask that insurer or your city office about their equivalent measure. First confirm which insurer you belong to.
5If your My Number insurance card or Certificate of Eligibility was lost, apply for a replacement once things settle. For Kyokai Kenpo, a Certificate of Eligibility is normally applied for through your employer; each prefectural branch can advise you.
6If your medical bill is likely to be high, the high-cost medical expense ceiling (via a limit-application certificate or your My Number insurance card) can cap what you pay at the counter.
7If explaining in Japanese is difficult, ask someone at your workplace to interpret by phone, or use your municipality's consultation desk for foreign residents. Don't give up on getting treatment.