Yamaguchi Prefecture19 municipalities

Of the 19 municipalities in Yamaguchi Prefecture, 16 cover outpatient care through age 18, 18 have no income limit, and 18 charge no outpatient co-payment. Since last year, 7 have changed their conditions (as of April 1, 2025, Children and Families Agency survey).

In Yamaguchi Prefecture, the municipalities that do not cover outpatient care through age 18 are Shimonoseki City, Iwakuni City and Sanyoonoda City. With an income limit: Hagi City. With an outpatient co-payment: Hagi City.

Since last year, Ube City, Yamaguchi City, Hofu City, Kudamatsu City, Hikari City, Mine City and Suooshima Town changed their conditions.

Child medical expense subsidy, national totals (as of April 1, 2025, Children and Families Agency survey)
Condition	Municipalities	Municipalities in survey	Share
Outpatient care covered through age 18	16	19	84.2%
No income limit	18	19	94.7%
No co-payment for outpatient care	18	19	94.7%
Changed since last year	7	19	36.8%

Filter by conditions

15 municipalities in Yamaguchi Prefecture where child medical care is free through age 18 (no income limit, no co-payment)

Yamaguchi City, Ube City, Shunan City, Hofu City, Kudamatsu City, Hikari City, Nagato City, Yanai City, Mine City, Tabuse Town, Suooshima Town, Hirao Town, Waki Town, Abu Town, Kaminoseki Town

3 municipalities where outpatient coverage ends before age 18

Shimonoseki City, Iwakuni City, Sanyoonoda City

1 municipalities with an income limit

Hagi City

1 municipalities with an outpatient co-payment

Hagi City

7 municipalities that changed their conditions since April 2024

Yamaguchi City, Ube City, Hofu City, Kudamatsu City, Hikari City, Mine City, Suooshima Town

National survey values as of April 1, 2025. Later changes confirmed on official websites are noted on each municipality's page.

All 19 municipalities in Yamaguchi Prefecture

Subsidy conditions as of April 1, 2025. Population from the resident register, 2024. Last checked September 24, 2026.

Child medical expense subsidy in the 19 municipalities of Yamaguchi Prefecture (as of April 1, 2025, Children and Families Agency survey)
Municipality	Outpatient until	Inpatient until	Income limit (out / in)	Co-payment (outpatient)	Co-payment (inpatient)	Population	Changed
Shimonoseki City	Age 15	Age 18	No	No	No	243,422	No
Yamaguchi City	Age 18	Age 18	No	No	No	185,982	Yes
Ube City	Age 18	Age 18	No	No	No	156,438	Yes
Shunan City	Age 18	Age 18	No	No	No	134,733	No
Iwakuni City	Age 15	Age 15	No	No	No	124,568	No
Hofu City	Age 18	Age 18	No	No	No	113,144	Yes
Sanyoonoda City	Age 15	Age 15	No	No	No	58,871	No
Kudamatsu City	Age 18	Age 18	No	No	No	56,637	Yes
Hikari City	Age 18	Age 18	No	No	No	48,015	Yes
Hagi City	Age 18	Age 18	Yes	Yes	Yes	41,637	No
Nagato City	Age 18	Age 18	No	No	No	30,207	No
Yanai City	Age 18	Age 18	No	No	No	29,233	No
Mine City	Age 18	Age 18	No	No	No	20,921	Yes
Tabuse Town	Age 18	Age 18	No	No	No	14,033	No
Suooshima Town	Age 18	Age 18	No	No	No	13,537	Yes
Hirao Town	Age 18	Age 18	No	No	No	10,748	No
Waki Town	Age 18	Age 18	No	No	No	5,695	No
Abu Town	Age 18	Age 18	No	No	No	2,945	No
Kaminoseki Town	Age 18	Age 18	No	No	No	2,190	No

Source: Children and Families Agency, Survey on Municipal Child Medical Expense Subsidies (municipal form, attachment 3) / e-Stat, Statistical Observations of Municipalities 2026 (Statistics Bureau of Japan)