Infant Medical Subsidy: How It Works

May 1, 2026 Maternity Prep Navigator Editorial ~6 min read

Babies get sick easily and visit doctors often. The "infant medical subsidy" helps support the family budget. Municipalities subsidize the out-of-pocket portion of children's medical costs, but eligible ages and co-pays vary greatly by area. Here we explain the overview and how to use the medical card — always confirm specifics with your municipality.

1. What the subsidy is

This subsidy covers the patient's normal out-of-pocket share of insured medical costs. By showing a "medical card" alongside the insurance card at the clinic counter, payment becomes free or very low.

It's not a uniform national system — each municipality runs its own. So names, eligibility, and coverage differ. What's true in one city may not apply in another.

2. Eligible ages & co-pays

Eligible ages vary — pre-school, through junior high, or through high-school age, set locally. More areas are expanding the age range each year.

On co-pays

• Areas with fully free counter payments
• Areas with a small co-pay per visit
• Areas with or without income limits

Even under the same name, coverage varies widely. Amounts and conditions can change, so confirm your co-pay and scope with your municipality's latest info.

3. Applying for the card

To receive the subsidy, first apply for a medical card. After birth and enrolling baby in health insurance, apply at your municipality.

Typically needed

• Application form (office or website)
• Baby's health insurance card
• Applicant's ID
• My Number documents (if requested)

Doing this with the birth registration and child allowance is efficient. Some areas accept the application before the insurance card arrives — ask at the counter. Issuance can take time, so apply early.

4. Regional differences

If considering a move, a new area's coverage matters for ease of parenting. Detailed guidance is on each municipality's official site.

5. Out-of-area visits & refunds

The card usually works at clinics in the issuing area (or prefecture); it may not work out of area. In that case, pay out of pocket and later apply for a refund (reimbursement).

Refunds typically require the clinic receipt. For visits while traveling or when you forget the card, keep your receipts. Confirm the method and deadline with your municipality.

6. Procedures when moving

When you move, reapply for the card at your new municipality. The old card stops working, so file promptly after moving in.

If delayed, you may pay full cost and claim a refund later. Even with no visits planned, switch your card early. Rules can change, so confirm the latest with the new municipality.