The cost of an insured person or a dependent receiving medical care while residing or traveling overseas is reimbursed at a later date upon application (this is called "payment of medical expenses").
However, the level and cost of medical care under overseas medical care policies may differ from those under Japanese health insurance policies.
The amount actually reimbursed is not the full cost paid, but an amount calculated on the basis of medical care costs under domestic insurance using as reference an "attending physician's statement" and an "itemized receipt" with a breakdown of medical care costs issued by the overseas hospital.
Please make sure you receive a document indicating the medical care received and an itemized receipt with a breakdown of medical expenses.