What NHI Covers and What's Excluded

NHI coverage Japan decides which care National Health Insurance pays for and which bills land fully on you.¹² A delivery, a ceramic crown, or a full health screening can each flip from copay to self-pay on a single classification.³⁴

Confirm current details with official sources

Procedures, fees, and requirements can change. Confirm current details at the Ministry of Health, Labour and Welfare (MHLW) and your municipal ward office. This article is general information, not medical advice; for your specific case, consult a licensed physician.

Overview

Japan runs one national benefits package for all public insurance schemes. The MHLW defines the package and revises the fee schedule every two years, and every provider bills from that same schedule.² An NHI member therefore faces the same covered-versus-excluded boundary as an Employees Health Insurance member.

What differs is administration, not medicine. Municipalities operate NHI, issue proof of qualification, and handle vouchers and high-cost claims, so the ward office controls the paperwork route while Tokyo sets the medical rules.⁵³ Confirm local filing steps with your own ward office whenever this article points to a municipal counter.

At an NHI-partnered facility, which covers the large majority of clinics and hospitals, you present proof of qualification and pay 20 to 30 percent at the counter while the municipality pays the remainder.³ Treatment received without showing proof of qualification bills at full cost.³

What NHI covers

Covered care means treatment listed in the national fee schedule as medically necessary for illness or injury.² Hospital care, outpatient visits, mental health care, and listed drugs sit in this core with copayments as the main cost sharing.²

Outpatient and inpatient care

Clinic visits, specialist consultations, surgery, hospitalization, and emergency treatment at insured facilities all follow the copay path when a doctor judges the care medically necessary.³² Standard shared rooms and standard inpatient meals during a covered stay are part of the insured episode.³

Show your proof of qualification at every visit. A lapsed qualification or a visit to a non-partnered facility without prior arrangement can leave the full bill with you until reimbursement is sorted.³

Prescription drugs and diagnostics

Drugs and devices on the national price lists are insured, and the pharmacy dispenses them at the normal copay.¹² Blood work, X-rays, MRIs, and other tests ordered to diagnose or track an illness or injury are insured diagnostic care.⁶

Pre-listing drugs, off-label use of listed drugs, and trial-stage treatments sit outside insurance unless they qualify as evaluation or patient-requested combination care.¹ Ask the prescriber whether a newly approved drug has reached the price list before assuming the copay applies.

Dental treatment for medical conditions

Basic functional dentistry is covered at the normal copay. Fillings with standard materials, extractions, root canals, periodontal treatment, and standard metal crowns all take the insured path.²⁴

A typical covered filling costs about 2,000 to 3,000 yen out of pocket (as of 2026-03; confirm current figures with the treating clinic).⁴

Coverage restores function with standard materials. Anything chosen for appearance or premium material, covered in the exclusions section below, splits off into self-pay.⁴

Rehabilitation and home-visit nursing

Rehabilitation ordered as treatment after hospitalization or for ongoing illness or injury bills as insured care under the fee schedule.⁷² Home-visit nursing received on a doctor's direction is likewise an NHI benefit category, alongside hospital meal fees during inpatient stays.³

The trigger is always a medical order. Maintenance exercise without a treatment plan, or nursing arranged privately without direction, does not ride the insured path.³

Prenatal checkups and the high-cost safety net

Pregnancy and catastrophic bills each get a dedicated protection track outside the ordinary copay. One runs on municipal vouchers, the other on a monthly refund cap.³⁴

Prenatal checkups via municipal vouchers

Prenatal checkups are subsidized through coupons issued by your municipality, not billed through the fee-schedule copay. LO-PAL sketches the national pattern as 14 vouchers from city hall worth about 80,000 to 120,000 yen in total (as of 2026-03; confirm current figures with your municipal ward office).⁴

Counts, values, and issue routes are set city by city. Register the pregnancy at the ward office early so the voucher window covers the full schedule, since a late claim compresses the subsidy across fewer remaining checks.³⁴

The diagram above shows the voucher path: registration, issuance, participating clinic, balance billing. Cite the route from the municipal administration rule.³

High-cost medical expense protection

When copayments in a single calendar month run high because of hospitalization or costly treatment, the 高額療養費 (kōgaku ryōyōhi, "High-cost Medical Expense Benefit") refunds the part above the monthly cap.³ Calculation runs strictly per treatment month, from the first day to the last day, and bills from different months never combine.³

Treatments outside NHI, private-room surcharges, and hospital meal bills are not eligible for the refund.³ For patients under 70, a copayment under 21,000 yen at one facility in one month cannot be added in, and inpatient and outpatient tallies at the same facility count separately.³

Filing runs through the household. As a rule the head of household claims within two years from the first day of the month following treatment, and eligible households are notified about three to four months after the treatment month.³

What NHI does not cover

The exclusion list is national and uniform: a treatment excluded in Tokyo is excluded in Osaka, because the fee schedule draws the line everywhere at once.²

The general rule is strict. An episode containing even one non-covered treatment becomes fully self-pay unless the non-covered part qualifies under a designated combination path.¹⁸

The diagram above shows the decision shape: listed care takes the copay, designated combination care splits the bill, and anything else converts the whole episode to self-pay.¹⁸

Cosmetic surgery and non-medical upgrades

Purely cosmetic surgery and cosmetic dermatology with no disease or dysfunction behind them are excluded.⁶⁴ Reconstruction after injury or disease that restores function can stay covered, since the line turns on medical necessity rather than technique.⁴

Dental upgrades and vision correction follow the same logic. The table below gives secondary self-pay bands; figures carry the currency note below the table (as of 2026-03; confirm current figures with the treating clinic).⁴

Item	Typical self-pay band	As of	Notes
Implant, per tooth	300,000 to 500,000 yen	2026-034	Surgery and crown vary by clinic (as of 2026-03)
Ceramic or white crown, per tooth	50,000 to 150,000 yen	2026-034	Metal crown is the insured standard (as of 2026-03)
Full orthodontics	600,000 to 1,200,000 yen	2026-034	Duration often 1 to 3 years plus retention (as of 2026-03)
Teeth whitening, per session	10,000 to 50,000 yen	2026-034	No insured path in routine cases (as of 2026-03)

Glasses, contact lenses, and LASIK are self-pay, while treatment for eye disease such as glaucoma, cataracts, or infections stays insured.⁴

A private hospital room chosen for comfort adds a surcharge of about 5,000 to 30,000 yen or more per night (as of 2026-03).⁴ Rooms assigned by the hospital for medical necessity or intensive care stay insured.¹

Ask whether a dental upgrade uses price-difference billing

Front-tooth cast crowns, metal-base dentures, and pediatric caries follow-up can use combination care where you pay only the material price difference.¹⁸ Confirm this before consent, since the receipt looks very different from full self-pay.

Advanced and experimental care

Cutting-edge techniques not yet approved under standard insurance, known as 先進医療 (senshin iryō, "advanced medical care"), charge the technique itself in full.¹⁴

Where combination care is approved, basic inpatient and drug charges stay insured while only the advanced technique bills in full.¹ Some advanced care is not eligible for combination at all, so eligibility must be confirmed before consent.¹

Three paths permit the split. Evaluation treatment covers advanced care, drug or device trials, pre-listing use, and off-label use of listed drugs.¹

Patient-requested care, or 患者申出療養 (kanja mōshide ryōyō, "patient-requested medical care"), runs through core clinical research hospitals with government screening in about six weeks.⁸ Elective care, or 選定療養 (sentei ryōyō, "elective (selected) medical care"), covers special environments, reserved or after-hours care, non-referral large-hospital first visits, over-limit procedures, over-180-day stays, and dental price differences.¹

Confirm combination-care status before advanced treatment starts

Ask the hospital to state in writing whether each step is insured, combination, or full self-pay. A technique outside both the insured list and the designated combination list triggers the pay-all rule.¹⁸

Normal childbirth outside the fee schedule

Normal vaginal delivery is not classified as illness, so it is not billed through the 70/30 split.⁹¹⁰ Cesarean sections, abnormal deliveries, and complications treated as sickness are covered as insured care.⁹¹⁰

Instead of the copay, every qualifying birth receives the 出産育児一時金 (shussan ikuji ichijikin, "Childbirth and Childcare Lump-Sum Grant") of 500,000 yen per child in principle (as of 2023-04).⁹ The level rose from 420,000 yen in April 2023 (as of 2023-04).⁹

At a compensation-scheme facility at 22 weeks or later the grant is 500,000 yen per child, and otherwise 488,000 yen per child, with multiples multiplying per child (as of 2023-04).¹⁰

Eligibility needs two facts: public insurance enrollment at birth and pregnancy of at least 85 days (4 months).⁹ Method and place do not matter once those hold.⁹

Direct payment to the facility is the norm. The insurer pays the hospital directly and the mother pays only the balance above the grant at discharge.⁹¹⁰

If the invoice falls below the grant, the difference is refunded.⁹¹⁰

Normal delivery invoices at private facilities run about 400,000 to 650,000 yen in total (as of 2026-03; confirm current figures with the birth facility).⁴ For insured cesarean or complication portions with high bills, the high-cost cap path can apply alongside the lump sum.¹⁰

The diagram above shows the payment flow: normal delivery offsets against the grant, while an insured intervention adds a copay track beside the grant.⁹¹⁰

Comprehensive preventive screening

General medical checkups and complete medical examinations, the 人間ドック (ningen dokku, "comprehensive voluntary health screening course"), are not covered by NHI and bill in full (as of 2026-03; confirm current figures with the screening facility).³ Inoculations and vaccinations are likewise outside NHI billing.³

The table below gives secondary self-pay bands for screening and voluntary shots (as of 2026-03; confirm current figures with the screening facility).⁴

Item	Typical self-pay band	As of	Notes
Basic one-day dock	30,000 to 60,000 yen	2026-034	Standard labs plus ultrasound and ECG (as of 2026-03)
Dock with cancer options	60,000 to 100,000 yen	2026-034	Endoscopy and marker add-ons (as of 2026-03)
Premium MRI or PET packages	100,000 yen and higher	2026-034	Facility and menu drive the spread (as of 2026-03)
General influenza shot	about 3,000 to 5,000 yen	2026-034	Voluntary adult dose (as of 2026-03)
Mumps shot	about 5,000 to 8,000 yen	2026-034	Voluntary dose (as of 2026-03)

Municipal basic health checks for members, such as the metabolic-syndrome checkups for ages 40 to 74, run on a separate track, often free or at low cost.⁴ Work-related injuries fall under workers accident compensation insurance rather than health insurance.³

Injuries from criminal or intentional acts are excluded, and benefits are limited for injuries from fights or drunkenness.³

The maternal-benefit gap against Employees Health Insurance

The lump-sum grant is common ground. NHI and Employees Health Insurance enrollees receive it on the same national terms, so birth itself is treated equally across schemes.⁹¹⁰

The gap opens after birth. Employees Health Insurance pays the 出産手当金 (shussan teatekin, "childbirth allowance") when the insured person takes leave from the company for childbirth and receives no salary in that period, covering 42 days before birth, or 98 for multiples, through 56 days after.¹¹

NHI has no employer, no salary to replace, and no equivalent leave-income benefit.³¹¹

An NHI-enrolled mother therefore receives the lump sum but not the allowance. Freelancers, the self-employed, and others on NHI face the leave period as unpaid time, since no income-replacement claim exists at the municipal counter.³¹¹

How to confirm coverage before treatment

Ask the clinic whether the proposed procedure and material are insured care or self-pay.¹ Ask the insurer or the municipal NHI desk whether combination care applies to your case before consent.¹⁸

For childbirth, confirm direct-payment handling with the birth facility before admission.⁹¹⁰ For traffic-accident injuries, contact the NHI desk in advance so the treatment can be received as covered care.³

This article describes systems and access paths only; for your own treatment decision, consult a licensed physician.

Good to know

A normal delivery can turn covered mid-course when complications arise

A delivery planned as normal birth becomes partly insured the moment a covered intervention is ordered.⁹¹⁰ The insured portion follows the copay plus high-cost-cap path while the normal-birth portion still follows the lump-sum path.¹⁰

Families budgeting only the lump-sum arithmetic face two parallel payment rules at once. Confirm with the hospital office which lines on the invoice took which path before discharge.

The ceramic upgrade at the dentist is a price-difference choice in some cases

Front-tooth cast crowns, metal-base dentures, and pediatric caries follow-up can qualify for combination care where only the material difference is self-pay.¹⁸ The visit itself does not convert to full self-pay when this path applies.

Patients who assume any premium material voids the whole episode either overpay or decline needed care. Ask for the combination-care estimate in writing.

Prenatal vouchers do not make every pregnancy cost insured care

Vouchers subsidize the scheduled checks through the municipal coupon route, but delivery itself still follows the lump-sum track and any insured complication follows the copay track.⁹⁴ Three payment logics can therefore touch one pregnancy.

Register early at the ward office and map each cost to its track. The voucher count and value are municipal figures, so the ward office is the authority, not a national guide.

The high-cost cap runs by calendar month, not by episode

A long admission spanning two calendar months splits into two monthly calculations, and inpatient and outpatient tallies at one facility count separately for patients under 70.³ Timing across a month boundary changes the refund even when the treatment is identical.

The head of household files the claim, normally within two years, at the municipal counter for NHI members.³ Confirm the filing desk and the notification timing when the first large bill arrives.

See also

• The High-Cost-Catch (Kogaku Ryoyohi) System
• What Insurance Doesn't Cover
• Who Enrolls in National Health Insurance
• How Japan's Universal-Coverage System Works
• Maina-Hokensho: Health Insurance Card Going Digital
• NHI Premium Calculation

References

Footnotes

1. EY Japan Health Insurance Society. "Expenses for Combined Covered/Non-covered Medical Care". https://www.eyjapan-kenpo.jp/eng/situation_03.jsp ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶

2. Commonwealth Fund. "JAPAN: International Health Care System Profile." May 2026. https://www.commonwealthfund.org/sites/default/files/2026-05/2026_Country-Profiles_Japan.pdf ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹

3. Nerima City. National Health Insurance Guidebook 2026 (English PDF). https://www.city.nerima.tokyo.jp/kurashi/nenkinhoken/kokuminkenkohoken/hoken_gaiyo/gaikokugo_guide2021.files/guidebook2026_english.pdf ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷ ↩¹⁸ ↩¹⁹ ↩²⁰ ↩²¹ ↩²² ↩²³ ↩²⁴ ↩²⁵ ↩²⁶

4. LO-PAL (Taku Kanaya). "What Japan's Health Insurance Won't Cover (The Costly List)." 2026-03-28. https://lo-pal.app/guide/en/japan-insurance-not-covered ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷ ↩¹⁸ ↩¹⁹ ↩²⁰ ↩²¹ ↩²² ↩²³ ↩²⁴ ↩²⁵ ↩²⁶

5. 厚生労働省 (MHLW). 「国民健康保険制度の概要」. https://www.mhlw.go.jp/content/000951286.pdf ↩

6. GaijinPot Blog. "Treatments covered and not covered by Japan's health insurance." 2020-11-24. https://health.gaijinpot.com/treatments-covered-and-not-covered-by-japans-health-insurance/ ↩ ↩²

7. 厚生労働省 (MHLW). 「医療保険制度の概要」 Overview of Medical Service Regime in Japan (English PDF). https://www.mhlw.go.jp/bunya/iryouhoken/iryouhoken01/dl/01_eng.pdf ↩

8. JERA Health Insurance Society. "When you receive medical care which requires payment of the difference". https://www.jerakenpo.or.jp/eng/member/benefit/difference.html ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷

9. 厚生労働省 (MHLW). 「出産育児一時金等について」. https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/kenkou_iryou/iryouhoken/shussan/index.html ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³

10. 全国健康保険協会 (Kyokai Kenpo). 「出産育児一時金」. https://www.kyoukaikenpo.or.jp/benefit/childbirth/002/index.html ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹

11. 全国健康保険協会 (Kyokai Kenpo). 「出産手当金」. https://www.kyoukaikenpo.or.jp/benefit/childbirth/001/ ↩ ↩² ↩³