You may be a parent in Korea who has just received a screening form for your baby from the National Health Insurance Service (NHIS, 국민건강보험공단). You may wonder what the doctor will check, whether it costs anything, and what happens if the result is not "good."
Or you may live elsewhere and wonder how a national program checks every child's development on a fixed schedule. This column explains Korea's national health screening for infants and children (영유아 건강검진) as of October 2026, from the schedule and cost to what follows a flagged result and whether foreign families can use it. It also compares the system with the American Academy of Pediatrics (AAP) schedule without ranking countries.
How many screenings are there, and what do they cost?
Korea offers eight screenings, one per age window from 14 days to 71 months. The Ministry of Health and Welfare (보건복지부) sets the windows in its Health Screening Implementation Standards (건강검진 실시기준), last revised in January 2026.
| Round | Age window | Dental exam window |
|---|---|---|
| 1st | 14 to 35 days | None |
| 2nd | 4 to 6 months | None |
| 3rd | 9 to 12 months | None |
| 4th | 18 to 24 months | 18 to 29 months |
| 5th | 30 to 36 months | 30 to 41 months |
| 6th | 42 to 48 months | 42 to 53 months |
| 7th | 54 to 60 months | 54 to 65 months |
| 8th | 66 to 71 months | None |
For a child covered by National Health Insurance, including a dependent of an insured person, the NHIS pays the full cost of a screening done inside its window. The national and local governments cover children on Medical Aid (의료급여) instead. "Free" means the screening only: follow-up tests and treatment cost extra, and the insurance itself has premiums. The NHIS sends the screening form electronically, or by mail if it goes unread, and any infant screening clinic nationwide can do the screening.
What does a screening check, and how does the K-DST work?
By the standards, a screening has up to five parts: a health history and physical exam, body measurements (height, weight, head circumference), a developmental assessment with counseling, health education for caregivers, and an oral exam in the dental windows. The developmental assessment uses the Korean Developmental Screening Test for Infants and Children (K-DST, 한국 영유아 발달선별검사). It starts at the 3rd round, at 9 to 12 months, and the NHIS lists it for every round through the 8th, six in all.
It is a questionnaire, not a session where someone tests your child. You rate what your child can do on a four-point scale, using questions matched to your child's age. A doctor reviews the answers, decides the result and talks it over with you. For babies born before 37 weeks, the standards use an age adjusted from the due date until 24 months.
The NHIS English page offers English infant forms (2019 files) and an English K-DST (2018 files). Ask your clinic which version it accepts.
What do the result labels mean?
The result form scores each area of development on its own: gross motor, fine motor, cognition, language and social skills, plus self-help from the 4th round on. Each area gets a label, such as Good (양호), Follow-up examination required (추적검사 요망) or Further evaluation recommended (심화평가 권고). Names follow the NHIS English form, an older file; the current Korean form may differ. We matched the standards' score bands to these labels by their order in the standards.
| Score in one area, against same-age children | What the standards say | Label |
|---|---|---|
| Average, above average, or up to 1 standard deviation (SD) below | Typical or faster development is likely | Good |
| 1 to 2 SD below (about the lowest 2.3 to 15.9 percent of children) | May not yet have the skills in that area | Follow-up examination required |
| More than 2 SD below (about the lowest 2.3 percent), or any "yes" to the extra questions | Delay suspected; further evaluation needed | Further evaluation recommended |
The extra questions cover motor, language or social development and vary by round. The forms are frank about limits. A screening checks normal growth and development, not particular diseases; a "good" result does not rule out later problems, and rare conditions may not be found.
What happens after a "further evaluation recommended" result?
A flagged area is not a diagnosis. When delay is suspected, the standards require the clinic to point the parent to a hospital or clinic for a developmental assessment. They name three kinds of departments for referral: pediatric neurology, pediatric rehabilitation medicine and pediatric psychiatry. The steps then run like this.
- After the NHIS mails or texts you an infant development evaluation result notice (영유아 발달평가 결과 안내), you take your child for the full assessment within one year of the screening date.
- You apply for the test-fee support (영유아 발달 정밀검사비 지원) at the public health center (보건소) for your home address, by the end of June of the year after the assessment.
The support pays up to ₩200,000 for most children covered by health insurance and up to ₩400,000 for children on Medical Aid or in the near-poverty group (차상위계층). These are caps for the exam and test fees the assessment directly needs, and therapy is not listed. Official pages show no income cut-off number: the higher tier depends on a Medical Aid card or near-poverty certificate.
If your child already has a developmental diagnosis or is in treatment, the clinic may not recommend another assessment. The support may also exclude a child registered with the same type of disability or in treatment for the same area.
Can a foreign family use the screening?
The NHIS English site says any foreigner who stays in Korea for over six months must join National Health Insurance, with some exceptions by visa type, a rule in effect since July 16, 2019. Membership begins the day after the six-month mark, and marriage migrants, permanent residents and employees of covered workplaces join sooner.
A baby born in Korea to an enrolled parent is covered from the birth date, as a local subscriber (지역가입자) if the parent is one, or as a dependent of an employee subscriber (직장가입자). Foreigners who arrived after April 3, 2024 need a six-month stay to be listed as dependents, except the spouse and minor children of an employee subscriber.
The law behind the screening, Article 52 of the National Health Insurance Act (국민건강보험법), covers insured persons and dependents under 6 and does not mention nationality. The NHIS English site says insurance for foreigners has "the same coverage" as for Korean citizens.
Reading the two together, an enrolled foreign child, or one listed as a dependent, should be in the same program on the same terms. That is our reading, not a sentence the NHIS prints about foreign infants, so confirm it for your child.
People covered by foreign insurance or an employer contract can be exempt from enrollment for up to a year at a time; ask the NHIS how that affects your child. The NHIS call center is 1577-1000, with English consultants at 033-811-2000.
What does the research say about the K-DST?
A 2020 paper in Clinical and Experimental Pediatrics, by Chung and colleagues, reports that the revised K-DST, retested in 2015 to 2016 with data from 3.06 million children in the national program, had a sensitivity of 0.833 and a specificity of 0.979. Sensitivity is how often a test flags children who have a condition. Specificity is how often it clears children who do not. These are results under the study's conditions, not a promise that the national screening finds 83 of every 100 children with delay.
A 2026 analysis in Annals of Rehabilitation Medicine, by Kim and colleagues, followed Korean children born from 2011 to 2018 who completed the first four rounds. Those told to seek further evaluation at least once had a higher risk of a later neurodevelopmental diagnosis, most of all autism (hazard ratio 19.70, 95% confidence interval 17.48 to 22.20). A hazard ratio compares risk between two groups; it does not count the cases the screening missed.
The Ministry of Health and Welfare's Fourth Comprehensive Plan for National Health Screening (제4차 국가건강검진종합계획), announced June 30, 2026 and covering 2026 to 2030, would study how well the K-DST works, consider longer windows for the 1st and 8th rounds, and add online applications for test-fee support. None of this is in force as of October 2026.
How does this compare with the AAP schedule in the US?
Korea's rounds are a national program set by law and ministry standards. The AAP's Bright Futures schedule is a set of recommendations for pediatricians, and it says it is not a standard of medical care.
| Topic | Korea (as of October 2026) | United States (AAP schedule published February 2025) |
|---|---|---|
| General developmental screening | Rounds 3 to 8, from 9 to 12 months | At 9, 18 and 30 months, and whenever a concern arises |
| Autism-specific screening | The standards name no autism-specific tool; the NHIS lists autism among the conditions the check targets | At 18 and 24 months |
| Cost | No out-of-pocket cost for enrolled children | Depends on the plan: some private plans must cover it without cost-sharing under the Affordable Care Act; Medicaid covers screening, diagnosis and treatment for enrolled children under 21 |
| If there is a concern | Referral for a hospital assessment, with test-fee support | Further evaluation, often through the state early intervention system (birth to age 3) or local schools (age 3 and up), per the CDC; parents can self-refer |
The AAP also asks pediatricians to watch development at every well-child visit. It says this surveillance is not screening and cannot replace a validated tool.
The short version
- Korea's national screening has eight rounds between 14 days and 71 months, with no out-of-pocket cost for insured children inside each window.
- The K-DST questionnaire starts at 9 to 12 months. Parents answer, a doctor reviews, and the result is a screen, not a diagnosis.
- After "further evaluation recommended," test-fee support pays up to ₩200,000 (₩400,000 for Medical Aid or near-poverty). Assess within a year and apply by the end of June of the next year.
- An enrolled foreign child, or one listed as a dependent, should be in the same program; confirm with the NHIS.
- The AAP recommends developmental screening at 9, 18 and 30 months and autism screening at 18 and 24 months.
This column is based on the National Health Insurance Service's screening and English pages, the Ministry of Health and Welfare's 2026 standards and plan, the National Health Insurance Act, the Gov24 (정부24) test-fee page, the AAP, CDC, Federal Register and Medicaid.gov pages, and the two studies named above, all checked October 2026. It is general information, not medical advice — talk to your child's doctor (or the relevant office) before making decisions.