You are strongly advised to take out comprehensive private health insurance
before leaving for Japan because the Japanese national heath service does not
serve non-Japanese citizens unless they have residence status.
Annual travel insurance – which covers not only emergency health costs, but
also insures your belongings – is available for as little as 75 euros, so is
a better investment than trip-by-trip insurance. You will need to be officially
resident in your home country for a total of at least six months in the year
however.
Many travel websites offer good insurance deals for Japan, such as:
Buying private medical insurance over the internet is a simple process, you
will just need to provide your credit card details, your permanent address and
contact info, and then you will receive you policy document by e-mail.
Pay attention to what your policy will actually cover before buying. Do you
intend to do winter or water sports? Do you have any illness or disability that
needs to be declared? Such factors will affect the overall cost of your policy.
Once your policy document comes through keep it in a safe place and always
have the emergency telephone number of your insurance company and your policy
number on your person when you travel.