LifePublished Updated 5 min read

Healthcare and Insurance in Japan: How to Prepare for Care

Understand insurance enrollment, clinic flow, My Number insurance-card materials, and what to verify locally.

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Japan’s public medical insurance is built around a simple counter rule: enrolled people usually pay 30% at the clinic or pharmacy. The hard part is keeping enrollment current when you arrive, move, change jobs, resign, or switch to My Number health insurance card use.

Which insurance applies

Company employees usually join employer health insurance such as Kyokai Kenpo or a health insurance society. Self-employed people, students, unemployed residents, and family members not covered by another public plan join National Health Insurance at the municipal office. Employer plans let a worker cover a spouse or children as dependents; National Health Insurance has no dependent category, so each eligible family member is enrolled individually and the household pays one combined premium.

When you move in or leave a company plan, report it at the municipal office within 14 days. If you are enrolled but proof of coverage has not arrived yet, you may pay 100% at a clinic and claim the insured share back. If you report late, the premium is still charged back to the date you became eligible, and Nakano City, for example, warns that medical costs during the delay are entirely your own.

Clinic and hospital use

For fever, cold symptoms, chronic medication, skin problems, dentistry, eye issues, or minor injuries, start with a nearby clinic. Larger hospitals often expect a referral letter and may charge a selected medical care fee for first visits without referral.

At reception, show your My Number health insurance card or a qualification confirmation document (the old paper insurance card stopped being issued in December 2024 and expired in December 2025), fill in the medical questionnaire, see the doctor, pay the 30% share, receive a prescription, and take it to a pharmacy. Prescriptions are usually valid for 4 days.

Costs and high-cost care

A normal clinic visit plus medicine may be around JPY 2,000 to 5,000 with insurance, but tests, imaging, and specialist care raise the amount. Children, people aged 70 to 74, and people aged 75 or older have different burden ratios or local subsidies.

The high-cost medical expense system caps monthly out-of-pocket burden by income band, and the caps were raised for care from August 1, 2026. Under-70 monthly caps are now:

Approx. annual incomeMonthly capFrom 4th monthAnnual cap
JPY 11.6M or moreJPY 270,300 + 1% of total cost above JPY 901,000JPY 140,100JPY 1,680,000
JPY 7.7M to 11.6MJPY 179,100 + 1% above JPY 597,000JPY 93,000JPY 1,110,000
JPY 3.7M to 7.7MJPY 85,800 + 1% above JPY 286,000JPY 44,400JPY 530,000
Up to JPY 3.7MJPY 61,500JPY 44,400JPY 530,000
Resident-tax exemptJPY 36,900JPY 24,600JPY 290,000

The annual cap is new and runs August to July; the lower rate from the 4th month applies once you have hit the cap in 3 of the past 12 months. For example, a JPY 1,000,000 bill in the middle band costs JPY 300,000 at 30%, but the cap is about JPY 92,940. Using the My Number health insurance card at a hospital that reads it, or a limit application certificate, applies the cap at the counter so you do not pay the full 30% first. A further step from August 2027 splits the income bands more finely, so check MHLW before planned surgery.

Pharmacy and medication notebook

Take the prescription to a dispensing pharmacy, including chains such as Matsumoto Kiyoshi, Welcia, Cocokara Fine, or Sundrug where a prescription counter is attached. Prescription medicine is covered by insurance; a 7-day antibiotic course may leave JPY 500 to 1,500 out of pocket.

The medication notebook records what has been dispensed. Showing it each time can reduce the pharmacy charge by around JPY 40 to 100 and helps pharmacists catch duplicate ingredients across clinics. If you want generics, tell the doctor or pharmacist that generic medicine is fine.

Language and emergency support

AMDA International Medical Information Center, JNTO medical institution search, Tokyo medical interpretation services, and hospital interpretation tools can help when Japanese is difficult. Write symptoms, date, temperature, allergies, and medicines on paper or in a translation app.

For emergencies call 119. In some prefectures, #7119 helps decide whether symptoms need ambulance or urgent care. Ambulance transport itself is free, but hospital treatment is billed under insurance rules.

Common mistakes

Do not ignore insurance after moving or resigning. A 14-day delay can create refund paperwork or unpaid-premium problems. Do not go directly to a university hospital for a mild case unless you accept the extra first-visit fee.

Without proof of coverage you pay 100% at the counter. You can claim the insured share back only for periods you were properly enrolled, so a late National Health Insurance report can leave that bill unrecoverable. Keep receipts, medication notebook, referral letter, test results, and pharmacy records. They are useful for high-cost medical care, private insurance claims, and tax medical-expense deductions.

Useful terms

  • Kenko hoken: health insurance
  • Kokumin kenko hoken: National Health Insurance
  • Kogaku ryoyohi seido: high-cost medical expense system
  • Shokaijo: referral letter
  • Okusuri techo: medication notebook

References