Japan's public medical insurance system provides universal coverage with standardized costs across the country. Whether you visit a small neighborhood clinic or a university hospital, medical fees are strictly regulated by the national government under a unified tariff system.
1. Standard Medical & Dental Coverage
For all insured residents aged 6 to 69, public insurance pays 70% of eligible medical costs, leaving you with a 30% co-payment at the counter.
Services covered by public health insurance include:
- General physician consultations and specialist visits
- Hospitalization and medically necessary surgery
- Prescription drugs dispensed by licensed pharmacies
- Dental treatments (fillings, root canals, extractions, standard crowns)
- Physical therapy and medically necessary rehabilitation
2. High-Cost Medical Care Benefit (Kogaku Ryoyohi / 高額療養費)
If you face a serious medical emergency, major surgery, or long-term hospitalization, your 30% co-payment could quickly add up. To prevent financial hardship, Japan enforces the High-Cost Medical Care Benefit.
This system sets a maximum out-of-pocket monthly ceiling for insured medical expenses incurred within a single calendar month. The cap is calculated based on your age and income bracket:
- Standard Income (¥280k–¥500k/month): Approx. ¥80,100 + 1% of medical costs exceeding ¥267,000.
- Higher Income (¥530k–¥790k/month): Approx. ¥167,400 + 1% of medical costs exceeding ¥558,000.
- Low Income (Residence-tax exempt): Capped at ¥35,400 per month.
3. Maternity & Childbirth Cash Benefits
In Japan, normal childbirth is not classified as an "illness" and is therefore not covered by the 30% co-payment rule. However, public insurance provides generous cash grants:
- Childbirth and Childcare Lump-Sum Grant (出産育児一時金): Insured mothers (or dependants) receive a direct tax-free lump sum of ¥500,000 per child upon delivery. In most hospitals, this is paid directly to the medical facility via the direct payment system.
- Maternity Allowance (出産手当金): For employees taking maternity leave under Shakai Hoken, this covers approximately two-thirds of average daily earnings for up to 98 days surrounding childbirth.
4. Injury and Sickness Allowance (Shobyo Teatekin / 傷病手当金)
If you are enrolled in Shakai Hoken (workplace insurance) and become unable to work due to a non-work-related injury or illness for more than 3 consecutive days, you can apply for the Injury and Sickness Allowance.
It pays approximately two-thirds (66%) of your average daily salary starting from the 4th day of absence for up to 1 year and 6 months.
What Public Insurance Does NOT Cover
It is equally important to know what falls outside public coverage in Japan:
- Cosmetic procedures, elective surgeries, and LASIK vision correction
- Normal pregnancy checkups and uncomplicated delivery costs (partially offset by municipal coupons and the ¥500k grant)
- Routine health checks and private physical exams (人間ドック), unless ordered by a doctor to investigate symptoms
- Private hospital room upgrades (差額ベッド代) and non-standard meals during stays
- Advanced experimental medical treatments not listed on the national tariff
Where to confirm this
- MHLW: High-Cost Medical Care Benefit official guidance
- Kyokai Kenpo: Injury & Sickness Allowance details
- Read our guide on using your insurance at Japanese clinics
Guides are dated rather than undated: last reviewed 12 August 2026. This is an organisational aid, not legal or immigration advice — always confirm anything consequential with your ward office, the Immigration Services Agency, or a qualified professional.