1. the claims paradigm in digital healthcare transformation
south Korea's private health insurance market, and specifically, the accidental death and dismemberment insurance ("D&DI"), has a vast subscriber base that is often referred to as the second health insurance. the years 2025 and 2026 will be marked as the most important juncture in the history of the industry, as the analog billing method, which relied on paper receipts, is rapidly transitioning to digital data transmission, led by "actual losses24." However, behind this technological advancement is a complex web of tighter loss ratio management by insurers, stricter screening criteria for non-payment items, and subtle conflicts between the medical and insurance industries.
this report goes beyond simple documentation guidance, analyzing the structural mechanisms behind the P&C claims process and outlining the strategic knowledge consumers need to have in order to receive their rightful payouts in the changed landscape of 2026. In particular, it examines the entire P&C ecosystem through the lens of "claim documents," drawing on policy changes by financial authorities and recent dispute cases.
1.1 Background and objectives of the study
claiming for P&C insurance appears on the surface to be a simple act of submitting medical receipts and receiving money. However, at a deeper level, it is a complex legal and administrative process that intersects the Medical Act (issuance of mandatory records), the Insurance Business Act (insurance payment review), and the Data 3 Act (mydata).
the launch of the 'Silsom24' app in October 2024 provided the convenience of streamlining claims, but paradoxically, as 'data transparency' has increased, insurers' underwriting algorithms have also become more sophisticated. Non-payment items that used to be billed in a lump are now dataized and subject to review. Consumers need to clearly understand how the documents they receive are interpreted by insurers' underwriting logic.
this report is written for both the general public and industry insiders, and covers the entire process, from the preparation of P&C claim documents, to digital claims practices, to analyzing denials, to the allocation structure of the next four generations of P&C.
2. correlating the generational structure of P&C insurance with claims documentation
depending on when it was purchased, D&O insurance policies are categorized into generations 1 through 4, each of which has a significantly different coverage and deductible structure. this means that the details and strategy of the documentation required for a claim will vary.
2.1 The evolution of coverage structures and documentation requirements across generations
while the earliest P&C policies had little to no deductible, each generation of P&C policies increased deductibles and separated out non-benefit riders to prevent "moral hazard" and "stabilize loss ratios.
classificationgeneration 1 (old actual loss)generation 2 (Standardized Loss)generation 3 (Good Faith Loss)generation 4 (current) when sold ~Sep 2009 2009.10 ~ 2017.03 2017.04 ~ 2021.06 2021.07 to present deductible almost none ($0 to $5) 10-20 10-20% salary, 20% non-salary 20% salary, 30% non-salary claims Documentation Features receipts are mostly sufficient began requiring detail for non-pay items separate water/injections/MRI specials, require medical reports maximizes non-pay review, requires surcharge management
first-generation members: Receipts were easy to submit for outpatient medical expenses, but insurers are increasingly requiring detailed documentation, even for first-generation members, as they tighten their scrutiny of preexisting conditions.
fourth-generation enrollees: subject to the "non-benefit sliding scale (discount/surcharge)" that will be in full swing from 2026, fourth-generation members must calculate the surcharge effect this claim will have on the next year's premium before submitting claim documents. For example, receiving a non-benefit claim of KRW 1 million or more can increase the next year's premium by more than 100%, so it may be beneficial in the long run to forgo small claims.
2.2 The role of deductible mechanisms and documentation
a stop-loss payout is the "money paid by the patient" minus the "deductible" (copayment). in order to accurately calculate the deductible amount, it is essential to distinguish between 'salary' and 'non-salary' on the medical expense receipt (Jinryobi Yeongsujeung).
the card slip simply shows the total amount paid, but it does not contain the salary/non-salary information needed to calculate this deductible and is therefore ineffective as a claim document.
3. anatomy of key supporting documents: what do you need and why?
claims are a "paper war. insurance adjusters don't see you, they only look at your documents to decide whether to pay, so your documents are your only defense for your condition and expenses.
3.1 Medical bills and receipts (Medical Expense Receipt)
this is the most basic document. it follows the standard format set by the Enforcement Rules of the National Health Insurance Act.
3.1.1 Classification of salary and non-salary
receipts are broadly divided into 'Salary' and 'Non-salary'.
benefit: it is a medical expense recognized by the Health Insurance Corporation. here, the 'deductible' is the money that the insurance organization gives directly to the hospital, and the 'out-of-pocket expenses' are the money that the patient pays. The accidental loss insurance covers the 'out-of-pocket expenses'.
non-Benefit: these are items that are not covered by health insurance. The hospital sets the price and the patient pays the full cost. examples include hydrotherapy, nutritional injections, MRIs (some), and laser procedures. many of the key issues in an out-of-pocket claim arise from these non-covered items.
3.1.2 The pitfalls of full out-of-pocket
when you look at your receipt, you'll see a line item called "out-of-pocket". this is a benefit item, but you've used more than the health insurance coverage threshold, or it's designated as a 100/100 deductible. Many policyholders mistake this for a non-benefit, but it's classified as a benefit, which means it's only subject to a 20% deductible under the fourth-generation stop-loss policy (non-benefit is 30%). knowing these details can help you verify that your claim is calculated correctly.
3.2 Detailed Statement of Medical Expenses (DMSE)
this used to be optional, but now it's almost mandatory.
what it does: It breaks down items that are lumped together as "50,000 won for injections" on the receipt into "1 garlic injection, 1 vitamin C injection," etc.
free issuance principle: According to the Ministry of Health and Welfare's notification, the first issuance ofthe detailed medical bill is free of charge. Even if the hospital asks for a fee as a matter of practice, this is a legal right. however, you must pay a fee set by the hospital for reissues.
use it for underwriting: Insurers use this statement to single out "injections for cosmetic purposes" or "simple administration of nutritional supplements" and exclude them from coverage. So, if you get an uncompensated injection for therapeutic purposes, you should ask your doctor to specify "for therapeutic purposes" in your medical record.
3.3 Prescription & Diagnosis Certificate
prescriptionsfor patient retention: Prescriptions that are kept by the patient, other than for submission to the pharmacy, are labeled with a "KCD Code". this code is very important as the disease code determines whether or not a claim is covered.
free diagnosis confirmation: The cost of issuing a medical certificate is usually 1 to 2 million won. for small claims (usually 100,000 won or less, but recently in the range of 3 to 10,000 won), it is more of a navel than a belly. in this case, you can get a 'prescription with a disease code' for free to replace the medical certificate. this is also the recommendation of the Financial Conduct Authority.
4. 2025-2026 Digital Claims Revolution: "Real Loss24" and Data Transfer
on October 25, 2024, the Insurance Business Act was amended, and the "Silsom Insurance Claim Simplification Service (Silsom24)" was fully implemented. This means that the hospital's computerized data will be flown directly to the insurer, moving beyond the stage of photographing paper documents.
4.1 How does the Silsom24 app work and how to use it?
the 'Silson24' app connects hospitals and insurers through an intermediary organization (Insurance Development Institute).
log in and sign up: Sign up by authenticating your identity. It will automatically search and connect your 'My Accident Insurance'.
search and link hospitals: Search for hospitals you have visited. currently, most large hospitals such as advanced general hospitals are connected, but neighborhood clinics and pharmacies will be mandatory from October 2025.
select data: When the medical history appears, select the items you want to claim. receipts and details are automatically packaged and sent to you.
claim completion: The data is plugged into the insurer without further review, and simple cases are often paid the same day.
4.2 Limitations in the field and the 'pharmacy' dilemma
while this sounds perfect in theory, there are transitional issues in 2025.
low participation rates from neighborhood physicians: physicians often refuse to participate due to the administrative burden of data transfer and the fear that sensitive medical information will be accumulated by insurers and used as the basis for future "breaches of privilege" or "claim cuts.
disconnection of pharmacy integration: Hospital bills are sent to the app, but prescriptions are not integrated with the pharmacy, resulting in a "half-measure" that requires a separate paper receipt. users should make sure they have the pharmacy receipt, even if it's printed on the medication bag.
4.3 Leverage proxy billing and mydata
one of the powerful features of Silson24 is 'proxy billing'. it allows guardians to file claims on behalf of their elderly parents or minor children. it is linked to the Ministry of the Interior and Safety's public mydata, so you don't need to take out any documents to prove your family relationship, and once the family relationship is confirmed within the app, you are immediately authorized to make a proxy claim.
5. customized Claim Strategy by Situation and Medical Specialty (Case Study)
not all diseases require the same documentation. Insurers' 'loss ratio control' disease groups require much more demanding documentation.
5.1 Orthopedics: hydrotherapy and Extracorporeal Shockwaves
hydrotherapy is at the forefront of P&C disputes. more than 10 to 20 hydrotherapy treatments per year are likely to be considered 'excessive' under the Financial Conduct Authority's dispute resolution criteria.
5.2 Ophthalmology: cataract surgery
following a Supreme Court ruling in 2022, the criteria for cataract surgery coverage has been significantly tightened. Simply having a cloudy lens will not fully cover the cost of a multifocal lens.
hospitalization: In the past, even a stay of less than 6 hours was treated as a 'day ward hospitalization' and compensated as inpatient medical expenses capped at 50 million won, but now, unless you can prove that you actually needed inpatient treatment, you will only be paid within the 'commuting limit' (usually 250,000 won). this translates into millions of won in damages.
slit lamp micrographs: Insurers require medical images that can objectively prove the degree of lens opacity. it is imperative to obtain preoperative examination materials.
5.3 Dermatology: MD cream (adhesive transparent wound covering)
moisturizers (MD creams) prescribed for atopic dermatitis were classified as 'medical devices' and compensation for losses was possible. However, the increase in mass prescriptions for cosmetic purposes has made the examination difficult.
sealed prescription principle: If the entire bottle is prescribed and taken home, rather than opening the cap at the hospital and taking what is left after applying to the affected area (in-office treatment), it is compensated within the limit of in-office medical expenses.
appropriate dose: If you are prescribed three or four pills at a time, it may be considered excessive. to be on the safe side, your doctor's note should say "large area of affected skin requires multiple applications."
5.4 Emergency Room: Emergency Medical Management Fee
you will incur an "emergency medical expense" when you use the emergency room.
emergency patients: The full amount (deductible) is covered by your accident insurance.
non-emergency patients: For non-emergency patients (such as a simple cold) who use the emergency room of a major hospital, the patient is responsible for the full amount of the emergency medical management fee, and accidental loss insurance often does not cover this part of the policy (depending on when you enrolled). you should check your receipts to see how "emergency/non-emergency" is labeled.
6. the economics of small claims: to claim or not to claim?
the old saying goes, "If I see a hospital bill, I'm going to file it." since the introduction of fourth-generation stop-loss insurance, billing has become a strategic choice.
6.1 Understanding the hospitalization minimum deductible
there is a minimum deductible for D&O insurance depending on the size of the hospital.
clinic: 10,000 KRW
hospital: KRW 1.5 million
advanced general hospital: 20,000 KRW
(*4th generation deduct 20% salary/ 30% non-salary or the greater of the above amounts)
for example, if you were charged 12,000 won for a cold at your local doctor's office, you'll get 2,000 won back after deducting the 10,000 won deductible. You'll have to decide if it's worth the trouble of tearing off the paperwork and turning on the app to do this. Especially Gen 4 subscribers should be aware that this 2,000 won may leave a 'non-payment claim history'.
6.2 The huddle of drug claims
for medication, we typically deduct 5,000 won or 8,000 won per claim.
what if the medicine cost 6,000 won? You'll get 0 won because it's less than the 8,000 won deductible.
this is why many people habitually take pictures of their pharmacy receipts, but most of the time they get a 'no payment' text. it's better to check your policy's deductible and only make a claim if it exceeds it.
6.3 Simulating the 'premium sliding scale' of fourth-generation losses
starting in July 2024, a premium discount/increase system based on the amount of non-benefit payouts received was implemented for 4th generation accidental loss policyholders (after a grace period of 3 years).
stage 1: 0 won in non-benefit payments → premium discount of around 5%
stage 2: Less than KRW 1 million → Maintained
steps 3-5: KRW 1 million or more → 100% to 300% surcharge
if you received KRW 1.05 million in non-benefited treatment expenses (such as hydrotherapy), your premium may double the following year. in this case, it may be more beneficial to pay 50,000 won less and stay in the under 1 million won range. Therefore, it is important to check your accumulated non-payment amount at the end of the year.
7. legal Issues and Consumer Rights for Stop Loss Insurance Claims
7.1 Statute of limitations for claims: the three-year rule
the right to file an insurance claim expires three years after the date of the accident (Article 662 of the Commercial Code).
as of 2025, a bill to increase this to five years is being debated in the National Assembly, but has not yet been passed. Therefore, you should check to make sure you haven't missed any medical expenses from before 2022. You can use a 'hidden claim' service or a historical search on Real Loss24 to uncover any unclaimed cases and make a batch claim.
7.2 The two sides of medical advice consent
sometimes insurers will ask you to sign a medical consultation agreement for a large claim, saying, "Let's get a third party medical opinion."
the risk: The insurer's chosen doctor is statistically more likely to give a favorable (conservative) opinion.
response: Rather than blindly agreeing, it may be advantageous to reinforce your physician's opinion or insist on an evaluation at a third-party hospital of your choice (the insurer pays). this is also an important defense in an arbitration case.
7.3 Exemption for overseas medical expenses
in principle, accidental death and dismemberment insurance only covers medical expenses at domestic medical institutions covered by the National Health Insurance Act. hospital expenses incurred while traveling abroad should be handled under 'overseas travel insurance' rather than actual loss insurance. However, if you are injured abroad and treated at a domestic hospital after returning home, you can claim for actual losses.
8. looking to the future: the stop-loss insurance ecosystem in 2026 and beyond
8.1 Evolution to a hyper-connected healthcare platform
the year 2026 will be the year when P&C insurance will move from being merely 'reactive' to 'proactive'. Insurers will offer personalized healthcare services based on the vast amount of medical data collected through the P&C24 app.
8.2 AI automated adjudication will become ubiquitous
today, AI is only applied to some simple claims, but by 2026, AI will be able to analyze the text of medical billing statements to spot patterns of overuse in real time. This will ensure faster payments for good members, but will be a powerful deterrent for healthcare shoppers.
9. conclusion and summary guide
claims is no longer a receipt-collecting game; it's a data management and financial strategy.
here are the key principles for a successful claim:
get the right documentation: throw out the card slips and get your bills, receipts, and detailed medical bills.
utilize digital tools: Install the Silson24 app and keep track of your doctor visits.
makefinancial judgments: Calculate your deductiblefirst for small claims, and consider the potential for premium surcharges for expensive uncompensated care.
assert your rights: If the treatment is legitimate, make sure you have a doctor's note and test resultsto clearly show it was for therapeutic purposes.
understanding how stop-loss insurance claims work and how they are structured can be a powerful shield for your assets. we hope you'll be a smart stop loss consumer in 2026.
key Stop Loss Claims FAQs
Q1. Can I make a claim for nutritional supplements I buy at the pharmacy?
A: As a general rule, no. p&C insurance only covers "therapeutic" expenses. even if prescribed by a doctor, dietary supplements or simple nutritional supplements are not covered. However, if they are licensed by the Ministry of Food and Drug Safety and prescribed to treat a disease, they may be covered.
Q2. I found a receipt that is three years old, can I still file a claim?
A: Unfortunately, if your claim is outside the three-year statute of limitations, the insurer may deny payment. however, if you've requested a deferred payment or were in the middle of a dispute settlement, the statute of limitations may have been suspended and you should consult with an expert.
Q3. I filed a claim with the mobile app, but they want me to send original documents, why?
A: If your claim is over a certain threshold (usually $1 million) or is categorized as a case that requires on-site review, your insurer may require you to mail in original documents. in these cases, it's safe to send them by registered mail.
Q4. I have multiple insurers, do I need to file a claim with each?
A: Property and casualty insurance follows the principle of 'proportional indemnity'. if you have two accidental death and dismemberment insurance policies, you will not receive double the amount of the hospital bill, but the two insurers will split it between them. If you use a consolidated billing app, such as Accidental Death and Dismemberment 24, you can submit a simultaneous claim to all your insurers with a single entry (but each insurer will need to agree to provide information).
Q5. My doctor wants me to pay for a detailed medical bill, do I have to pay?
A: According to the Administrative Interpretation of the Ministry of Health and Welfare, the first one is free of charge, so please ask for it based on this. if they still refuse, you can contact your local health center.