AIG Health Insurance Association

AIG Health Insurance Association

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  • Last Update:2024/04/01

When you incur high medical care costs

Your copayment for medical care costs is capped. If your copayment calculated based on certain standards exceeds the maximum, the excess amount will be paid as “High-Cost Medical Care Benefits”.

Tips
  • When you use a Myna health insurance card, you will be exempt from payment in excess of the maximum copayment amount under the High-Cost Medical Care Benefits system without any prior procedures if you consent to provision of information on your Certificate of Application of Maximum Copayment Amount.
    We recommend using a Myna health insurance card. Using this card will eliminate the need to apply in advance for a Certificate of Application of Maximum Copayment Amount.

High-Cost Medical Care Benefits (for dependents, “Dependents' High-Cost Medical Care Benefits”)


If the copayment amount for medical care costs paid at the reception desk of the hospital becomes high, the Health Insurance Association will pay the amount beyond a certain figure later (the Cost-Sharing Maximum Amount) to help ease the burden of medical care costs. This is referred to as “High-Cost Medical Care Benefits” (for dependents, “Dependents' High-Cost Medical Care Benefits”).

High-Cost Medical Care Benefits are calculated for medical care costs incurred over a one-month period, from the first through the last day of the month. High-Cost Medical Care Benefits are also calculated on a per-person, per-hospital (outpatient/inpatient, medical/dental, etc.) basis.

The association's additional benefits

The Association provides its own benefits (additional benefits) in the amount of medical care costs* paid by the insured person and dependents at the medical care institution minus 25,000 yen.
These are called Patient Cost-Sharing Reimbursements (for dependents, Dependents’ Medical Care Additional Sum).
No application is required for these benefits, because the payment is automatically made after amounts are calculated based on rezepts (medical cost details) sent by hospitals to the Health Insurance Association.
The timing of payment is roughly three months after the month of examination or treatment. (Paid with the salary for current employees and paid separately for former employees)

  • * Only medical care costs covered by health insurance are eligible. Amounts are calculated per month, per individual, and per hospital (separately for outpatient and inpatient care, medical and dental care, etc.).
    Costs eligible for additional benefits exclude High-Cost Medical Care Benefits and meal expenses, accommodation expenses, and charges of beds incurring an extra charge during hospitalization.

[Notes]
If you visit multiple medical care institutions (hospitals, pharmacies, dental clinics, etc.) for examination or treatment, you must pay a copayment of roughly 25,000 yen to each institution.
If you receive both inpatient and outpatient treatment at the same medical care institution, you must pay a copayment of roughly 25,000 yen for each.

If you want to make sure the amount you pay at the reception desk of the hospital will not exceed the Cost-Sharing Maximum Amounts

If a person expects to incur high medical care costs, it can be more convenient to obtain “a Certificate of Application of Maximum Copayment Amount” in advance. By showing this “Certificate of Application of Maximum Copayment Amount” to the medical care institution together with your health insurance card, you can ensure that the amount of medical care costs for which the hospital bills you (per month) will not exceed the Cost-Sharing Maximum Amount and reduce the amount of medical care costs you must pay at the hospital on any single visit. (You can use this certificate for both inpatient and outpatient care)

Prior application required

“The Certificate of Application of Maximum Copayment Amount” is used to confirm your income category. You must apply to the Health Insurance Association in advance for this Certificate.

Reference link

Cases in which no Certificate of Application of Maximum Copayment Amount is needed

At medical care institutions and other facilities that have adopted the online eligibility verification system, simply present either your health insurance card or Individual Number Card in order to limit the amount you pay at the counter to no more than the Cost-Sharing Maximum, even if you do not have a Certificate of Application of Maximum Copayment Amount.

  • * Note that you must register in advance at Mynaportal etc. to use your Individual Number Card as a health insurance card.
  • * You must still submit a Certificate of Application of Maximum Copayment Amount at medical care institutions and other facilities that have yet to adopt the online eligibility verification system.

See here for more information.

Reference link

How High-Cost Medical Care Benefits are calculated

If your copayment is reduced still further

You can combine copayments for an entire household (Total High-cost Medical Care Benefits)

Even when the copayment for one case for one month is less than the maximum, if members of the same household have made copayments of 21,000 yen or more multiple times in the same month, they can combine those amounts for the purposes of the Cost-Sharing Maximum Amount.
If the total amount exceeds the Cost-Sharing Maximum Amount, then the excess amount is paid by the Health Insurance Association as “Total High-cost Medical Care Benefits”.

The Cost-Sharing Maximum Amount will be reduced for frequent qualification of expenditures.

If a single household qualifies for High-Cost Medical Care Benefits three or more months in a single year (the most recent 12 months), the Cost-Sharing Maximum Amount will be reduced to the amount of the table below starting with the fourth month.

Standard monthly remuneration Individual cost-sharing maximum amounts
830,000 yen or more 140,100 yen
530,000 yen - 790,000 yen 93,000 yen
280,000 yen - 500,000 yen 44,400 yen
260,000 yen or less 44,400 yen

Those receiving treatment for specified diseases and disorders

The amount paid to the medical care institution will not exceed 10,000 yen per month for patients with haemophilia, patients with AIDS receiving antiviral drugs, and patients with chronic nephritis who require artificial dialysis for an extended period, if they have been certified as having specified diseases and disorders.
However, if a patient requiring artificial dialysis and under 70 years of age qualifies as a person with 530,000 yen or more of standard monthly remuneration, his or her copayment will be 20,000 yen/month.
If you are eligible, apply for issue of Certificates Issued for Specific Disease Treatment.

If copayments for medical care and long-term care are high

When people in the same household pay copayments for both medical care and long-term care and the total copayment amount paid by the household over a one-year period (August 1 of the previous year to July 31) exceeds the maximum amount below, the excess amount is paid by health insurance and by long-term care insurance as “High Aggregate Cost for Long-term Care Services”.

  • ** The benefit will not be paid when the amount in excess of the maximum is 500 yen or less.
  • ** For persons less than 70 years of age, this applies if each copayment for medical care costs is 21,000 yen or more.
  • ** This is not paid when no copayment has been paid for either health insurance or long-term care insurance.

Cost-Sharing Maximum Amount

Category Under 70 years 70-74 years
830,000 yen or more
of standard monthly remuneration
2,120,000 yen
530,000 yen - 790,000 yen
of standard monthly remuneration
1,410,000 yen
280,000 yen - 500,000 yen
of standard monthly remuneration
670,000 yen
260,000 yen or less
of standard monthly remuneration
600,000 yen 560,000 yen

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