National Health Insurance

Joining National Health Insurance

All people except for those who are enrolled in your health insurance or who are receiving welfare protection must join them.

Notification of qualification information or issuance of qualification confirmation letter

  • If you have a My Number health insurance card, you will be given a "Notice of Eligibility Information (A4)" (the insurer information on My Number Card will be automatically updated from the day after you submit your eligibility notification).
  • Those who do not have My Number Card or have not registered their health insurance card will be issued an "Eligibility Verification Certificate (card type: paper)."
  • When receiving medical treatment, be sure to present your My Number Health Insurance card or eligibility confirmation certificate at the counter of the medical institution.
  • In addition, those over 75 years old (people 65 and older who have been certified for disability) will receive medical treatment under the latter-stage elderly medical care system.

Medical treatment benefits etc.

When you visit a medical institution for treatment for an illness or injury, 70% or 80% of the medical expenses will be reimbursed depending on the burden category (you will be responsible for 30% or 20%).
Besides that, there is payment of medical expenses, high medical treatment expenses, high-level nursing care total medical treatment expenses, childbirth allowance lump sum payment, and funeral expenses.

When reporting such as

Please report it within 14 days if a reason for the change has occurred.
If you are enrolled in National Health Insurance, please bring your My Number Health Insurance card or National Health Insurance eligibility certificate.
If you are a foreigner, you will also need a residence card.
For exampleDocuments required
When joiningWhen transferring from another municipalityCertificate of moving out from another city, town, or village
When I quit my health insurance at workSocial insurance loss certificate, etc.
When you are away from dependents of your health insurance at workSocial insurance loss certificate, etc.
When a child is bornMyna Insurance Card or Eligibility Confirmation, Maternal and Child Health Handbook, and proof of head of household's bank account number (if applying for a lump-sum birth benefit, a certificate and receipt from the medical institution are also required)
When you do not receive welfare protectionNotice of protection decommissioning decision notice
When to quitWhen you move out to another municipalityMy Number Insurance Card or National Health Insurance Eligibility Certificate
When entering health insurance at workSocial insurance enrollment certificate or social insurance qualification confirmation document, etc., and National Health Insurance qualification confirmation document
When you become a dependent of health insurance at work
When the insured diedNational health insurance qualification certificate, proof of funeral (such as a funeral attendance letter or funeral expenses receipt), and the chief mourner's bank details
Beginning to receive public assistanceNational Health Insurance eligibility confirmation, notification of start of protection
OtherWhen the address has changed in townMy Number Insurance Card or National Health Insurance Eligibility Certificate
When head of household or name changes
When a household is divided or when it comes together
When you decide an address separately for school attendanceMyna Insurance Card or National Health Insurance Eligibility Certificate, Student Registration Certificate
When I lose my insurance certificate (when it becomes dirty and can not be used)Identification (such as an expired qualification certificate)
When your period of stay has been renewed (for foreigners)New residence card, My Number health insurance card or National Health Insurance qualification certificate

National health insurance and traffic accident

In the case of injury in a traffic accident, in principle, the perpetrator pays the treatment cost. Although you can receive treatment at the National Health Insurance Association, you will be billed from the National Health Inspector to the perpetrator at a later date, so please be sure to notify me if you use National Health Insurance.

Things to bring

  • My Number Insurance Card or National Health Insurance Eligibility Certificate
  • Personal seal (hanko)
  • Traffic accident certificate

Expensive medical expenses

If you present a certificate of limit application, payment at the counter will be limited to the following limits. You can apply for a certificate of limit application at the Insurance and Medical Care Health & Welfare Division of your city hall, so please bring your My Number insurance card or eligibility confirmation document and seal.
If you are unable to apply for a limit certificate, you will need to pay the medical expenses yourself at the counter, then apply to the National Health Insurance and if approved, you will be reimbursed as high-cost medical expenses at a later date.

Self-pay limit (under monthly fee) for under 70 years

Income categorySelf-pay limit
principleMany times
ATaxable householdIncome of over 910,000 yen252,600 yen + (medical expenses - 842,000 yen) x 1%140,100 yen
IIncome 600 ~ 910 million yen or less167,400 yen + (medical expenses -588,000 yen) x 1%93,000 yen
CIncome of 210 ~ 6 million yen or less80,100 yen + (medical expenses -267,000 yen) × 1%44,400 yen
DIncome less than 2.1 million yen57,600 yen44,400 yen
OhTax-free household35,400 yen24,600 yen
  • 【A】 There is a National Health Insurance (including fictitious household head) who is taxed residence tax in household, and the total amount of gross income after deducting the basic amount of household's National Health Insurance (excluding fictitious household head) When the total exceeds 9 million yen
  • 【B】 There is a National Health Insurance (including fictitious head of household) who is taxed residence tax in household, and the total amount of gross income after deducting the basic amount of household 's National Health Insurance (excluding fictitious head of household) When the total exceeds 6 million yen and is less than 9 million yen
  • 【C】 All of the household's insured National Health Insurance (including fictitious head of household) are residents' taxation tax, and the total gross income after deduction of the basic insurance of the insured person's household (excluding fictitious head of household) is 2.1 million When it exceeds yen and it is less than 6 million yen
  • 【E】 All households insured National Health Insurance (including fictitious head of household) are taxed inhabitants, and the total gross income after deducting the basic insurance of household insurers (excluding fictitious household heads) is 2.1 million When it is less than yen
  • 【O】 When all of the household's insured National Health Insurance (including fictitious head of household) are exempt from inhabitant tax

Self-payment limit for over 70 years (Monthly)

Income categoryOutpatient (individual unit)Outpatient + hospitalization (household unit)Many times
Working income equivalent 4Income of over 910,000 yen252,600 yen + (medical expenses - 842,000 yen) × 1%140,100 yen
Income above 6 million yen but below 9 million yen167,400 yen + (medical expenses -588,000 yen) x 1%93,000 yen
Income over 2.1 million yen and 6 million yen or less80,100 yen + (medical expenses -267,000 yen) × 1%44,400 yen
General 318,000 yen (maximum annual amount 144,000 yen)57,600 yen44,400 yen
Low income people 28,000 yen24,600 yenN
Low-income person 18,000 yen15,000 yenN
  • [In-kind income earners 4] When there are national health insurants of 70 to 74 years old with a residence tax taxable income of 1.45 million yen or more
However, if you fall into any of the following categories 1 to 4, you will be considered a "General Household 3."
  1. National insurers aged 70 to 74 are alone for households, income is less than 3.83 million yen
  2. Even if income is more than 3.83 million yen, some people have been transferred to the latter-stage elderly medical care system in the same household, and the total income is less than 5.2 million yen
  3. There are two or more national security insurers aged 70 to 74 in households, and the total income is less than 5.2 million yen
  4. Household with new insured who will be 70 years old after January, Heisei 20, the total of the gross income after deducting the basic insurance premiums of 70-74 year-old insured (excluding fictitious household head) is 2.1 million yen Less than
  • [Low-income person 2]
When the household's National Health Insurance Insurer (including fictitious household head) is not subject to inhabitant tax
  • [Low-income person 1]
In the case that the income is 0 yen, corresponding to low-income person 2, with the individual pension deduction amount of 800,000 yen for National Health Insurance (including fictitious household head) aged between 70 and 74
  • [General household 3] In case that it does not correspond to any of the above income divisions

National Health Insurance Tax

For details, please see the following page.

Niseko Town National Health Insurance Data Health Plan

For details, please see the following page.

Niseko Town Health App Project

Starting in June 2025, we have launched the health app "kencom" for Niseko Town National Health Insurance subscribers aged 19 and over.
For more details, please see the following page.

Application and notification forms

You can download the file from the following link:
(For procedures not listed here, please contact us below.)

Inquiries regarding information on this page

Health & Welfare Division, Insurance and Medical Care Section
TEL:0136-56-8840
FAX:0136-44-3500