Lost Health Insurance Card or Eligibility Confiemation Document
Insured persons and dependents need to handle their health insurance card or Eligibility Confirmation Document with care because the Western Digital Technologies Health Insurance Association cannot freeze them even if lost or stolen.
If your health insurance card or Eligibility Confirmation Document is lost or stolen, you must immediately report the loss to the police and complete the lost health insurance card or Eligibility Confirmation Document procedure with the Health Insurance Society.
After December 2, 2024, a health insurance card will no longer be issued, please register your Individual Number Card as a health insurance card or apply to issue an Eligibility Confirmation Document.
Insured persons with optional continued insurance should contact the Western Digital Technologies Health Insurance Association.
After December 2, 2024, a health insurance card will no longer be issued.

Lost Healh Insurance Card
Registering your Individual Number Card as a health insurance card | Please refer to "How to Register your Individual Number Card as a health insurance card" under "Use of an Individual Number Card as a health insurance card". |
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Applying for the issuance of an Eligibility Confirmation Document (資格確認書) |
Application for (Re)issuance of Eligibility Confirmation Document |
Lost Eligibility Confirmation Document
Registering your Individual Number Card as a health insurance card | Please refer to "How to Register your Individual Number Card as a health insurance card" under "Use of an Individual Number Card as a health insurance card". |
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If you do not have an Individual Number Insurance Card and would like to continue to use your Eligibility Confirmation Document to receive medical treatment, please apply for a reissuance of your Eligibility Confirmation Document. | Application for Reissuance of health insurance card, Eligibility Confirmation Document or Elderly Beneficiary health insurance card Due to Loss/Damage |
Loat Eligibility Notification
If you have a smartphone, you can check your health insurance eligibility information (health insurance code and number, etc.) from the Individual Number Portal eligibility information screen.
Applying for the issuance of an Eligibility Notification (資格情報のお知らせ) |
Application for (Re)issuance of Eligibility Notification |
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Lost Individual Number Insurance Card
The issuance of the Individual Number Card will be handled by the municipality where you reside. Please contact your municipality's office for inquiries regarding application methods.