The Health Insurance System in Japan
Japan has a universal healthcare system that requires all residents (including foreigners with a visa for more than 3 months) to be enrolled in health insurance. It is one of the best healthcare systems in the world, and as an Indonesian citizen living in Japan, you are required to understand and utilize it.
Two Types of Health Insurance
| Aspect | Kokumin Kenko Hoken (国民健康保険/NHI) | Shakai Hoken (社会保険/Employee Insurance) |
|---|---|---|
| Who it's for | Self-employed, students, freelancers, part-timers | Full-time company employees |
| Enrollment | Register yourself at the city hall | Automatically enrolled by the company |
| Premium | Based on the previous year's income | About 10% of salary (50:50 split with the company) |
| Family coverage | Each member pays individually | Dependents are covered for free if their income is less than 1.3 million yen/year |
| Payment | Billed by mail, paid at a convenience store/bank | Deducted directly from salary |
| Includes pension | No (enroll in National Pension separately) | Yes (Kosei Nenkin is included) |
What is Covered by Insurance
Both systems cover the same things:
- Doctor consultations at clinics and hospitals
- Hospitalization including surgery
- Prescription medication from a pharmacy
- Laboratory tests and X-rays
- Childbirth (a subsidy of 500,000 yen via Shussan Ikuji Ichijikin)
- Physical rehabilitation
- Basic dental care (fillings, extractions, teeth cleaning)
You only pay 30% of the total medical costs. The remaining 70% is covered by insurance. For preschool children: 20%. For seniors aged 75+: 10-30%.
What is NOT Covered
- Cosmetic dental care (whitening, veneers, orthodontics)
- Plastic/cosmetic surgery
- Routine health check-ups (but companies usually provide them for free annually)
- Certain vaccinations (except those mandated by the government for children)
- Normal pregnancy (not considered an illness, but there is a large separate subsidy)
- VIP/private rooms in a hospital (差額ベッド代)
How to Enroll in NHI
- Visit the City Hall (市役所) or Ward Office (区役所)
- Find the NHI counter (国民健康保険の窓口)
- Bring your documents: Residence Card, passport, My Number Card/notification
- Fill out the enrollment form
- Receive your insurance card (保険証/hokenshou) - it's usually issued on the spot or mailed within 1-2 weeks
Important: You must register within 14 days of moving in. If you are late, the premiums will be billed retroactively from the date you were supposed to enroll.
Estimated NHI Premiums
| Previous Year's Income | Monthly Premium (estimate) | Notes |
|---|---|---|
| Newly arrived (0 yen) | 2,000-5,000 yen | Minimum premium, very affordable |
| 2 million yen/year | 8,000-15,000 yen | Student with a part-time job |
| 3 million yen/year | 15,000-25,000 yen | Part-timer or entry-level |
| 5 million yen/year | 25,000-40,000 yen | Full-time worker |
Note: Premiums vary between cities. Tokyo is generally higher than rural areas.
High-Cost Medical Expense System (高額療養費制度)
This is the most important feature you MUST know about. If your medical expenses in a single month exceed a certain limit, the excess amount will be refunded:
| Monthly Income | Maximum Monthly Out-of-Pocket Limit |
|---|---|
| Under 260,000 yen | 35,400 yen |
| 260,000 - 510,000 yen | 57,600 yen |
| 510,000 - 810,000 yen | 80,100 yen + 1% of the excess |
| 810,000 - 1,410,000 yen | 167,400 yen + 1% of the excess |
If you know you will be hospitalized, apply for a "Gengaku Ninteisho" (限度額適用認定証) at the city hall BEFORE being admitted to the hospital. This way, you won't have to pay the full amount upfront.
Procedure for Seeing a Doctor in Japan
- Find a suitable clinic - Clinics in Japan are specialized: 内科 (internal medicine), 歯科 (dentistry), 皮膚科 (dermatology), 耳鼻科 (ENT), 眼科 (ophthalmology), 小児科 (pediatrics).
- Bring your insurance card - Always bring your hokenshou when you see a doctor.
- Register at the reception - Fill out a medical questionnaire (問診票). Some large clinics have English versions.
- Consultation - Japanese doctors are usually brief and efficient.
- Pay 30% at the cashier
- Get the prescription (処方箋) - Take it to a nearby pharmacy outside the clinic (院外薬局).
Finding Multilingual Clinics
- AMDA International Medical Information Center: amdamedicalcenter.com - Multilingual hotline including Indonesian.
- Japan Healthcare Info (JNTO): jnto.go.jp/emergency - A list of hospitals that accept foreign patients.
- Himawari (Tokyo): himawari.metro.tokyo.jp - Search for clinics in Tokyo with a language filter.
Pregnancy and Childbirth
- Childbirth and Childcare Lump-Sum Grant (出産育児一時金): 500,000 yen per baby, paid directly to the hospital.
- Mother and Child Health Handbook (母子手帳): Received for free at the city hall, contains a schedule of subsidized check-ups.
- 14 subsidized check-ups from the municipal government.
- Average cost of childbirth: 400,000-700,000 yen. After the subsidy, there is often little to no additional cost.
Tips for Indonesian Nationals
- Never ignore the premiums - Arrears can reduce your coverage. If you cannot afford it, apply for a reduction/exemption (減額/免除) at the city hall.
- Keep all medical receipts - For claiming high-cost medical expenses and for tax deductions (医療費控除).
- Bring Google Translate to the clinic - The camera mode can translate Japanese forms in real-time.
- Register your family immediately - If your family arrives on a Dependent Visa, enroll them in NHI within 14 days.
- Consider supplementary insurance - Private insurance like Coop Kyosai (around 2,000 yen/month) can cover the remaining 30% and hospitalization costs.
Japan's health insurance system may seem complicated at first, but it is fundamentally very protective. By consistently paying your premiums, you gain access to high-quality healthcare services at an affordable cost. Never delay enrolling, and do not hesitate to see a doctor if you are sick.