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High-Cost Medical Expense Benefit高額療養費·kōgaku ryōyōhi

A monthly cap on what you personally pay for medical care. A huge hospital bill is almost certainly not the number on the paper.

Not verified yet

Drafted from general knowledge. Amounts, thresholds and deadlines change and vary by insurer and municipality — confirm with the office named here before you rely on it.

Why it matters

This is the most valuable thing on this site that almost nobody knows about. Japanese health insurance caps your out-of-pocket medical costs per calendar month based on your income — for many people around the ¥80,000 mark. Without it, a surgery and a hospital stay can look like hundreds of thousands of yen. People have gone home to their own country for treatment, or refused care, because they saw a bill and did not know this existed. It applies to foreign residents exactly as it applies to Japanese nationals.

Deadline
Claims can generally be made retroactively for about two years — but apply in advance if you can
Cost
Free
Time
30–60 minutes to apply; refunds take a few months

Do these first

  1. 1Move-in Notification 転入届
  2. 2National Health Insurance 国民健康保険

What to bring

  • Health insurance card健康保険証·kenkō hokenshō
  • Medical receipts領収書·ryōshūsho

    Keep every one. You cannot claim back what you cannot evidence.

  • Your bank account details振込先口座·furikomisaki kōza

    For a refund claim after the fact

How it goes

  1. 1

    If you know treatment is coming, get the certificate FIRST

    Apply for a 限度額適用認定証 (gendogaku tekiyō ninteishō — "eligibility certificate for the ceiling amount") from your insurer before you are admitted. Show it at the hospital desk and you are only ever billed up to your cap. This is far better than paying the full amount and claiming it back, because you never have to find the money in the first place.

    Say this

    限度額適用認定証を申請したいのですが。

    Gendogaku tekiyō ninteishō o shinsei shitai no desu ga.

    I would like to apply for a ceiling-amount certificate.

  2. 2

    Where to apply depends on which insurance you have

    On National Health Insurance (国民健康保険), apply at your city hall insurance desk. On employer insurance (社会保険), apply to your insurer — your HR department can tell you which one, or it is printed on your card.

  3. 3

    If you already paid the full bill, claim it back

    You can still get the excess refunded afterwards. On National Health Insurance your city hall often sends you a claim form automatically a few months later — but do not wait for it if nothing arrives. Claims can generally be made retroactively for around two years.

    Say this

    高額療養費の支給を申請したいのですが。

    Kōgaku ryōyōhi no shikyū o shinsei shitai no desu ga.

    I would like to claim the high-cost medical expense benefit.

  4. 4

    Know what the cap does not cover

    The cap applies to insured treatment. It does not cover the optional private-room charge (差額ベッド代), meals during a stay, or anything not covered by insurance. If you are offered a private room, ask whether it costs extra before you agree — you can decline.

    Say this

    この部屋は差額ベッド代がかかりますか。

    Kono heya wa sagaku beddo dai ga kakarimasu ka.

    Does this room cost extra?

  5. 5

    If costs repeat, the cap gets lower

    If you hit the ceiling in several months within a year, the cap is reduced for subsequent months. Long treatment gets cheaper, not more expensive. Mention it when you claim.