How to claim insurance: documents and deadlines

What making a claim means

Insurance money does not arrive by itself when something happens. The person entitled to the benefit must notify the insurer and request payment with the documents the terms require; only then does assessment begin. That request is the claim. In Korea, the person who can claim is the beneficiary named in the contract. Benefits for injury or illness usually go to the insured person, while a death benefit goes to the person named at signing or, if none was named, to the legal heirs. The insurer reviews the documents to decide whether the event meets a payment condition in the terms and how much to pay. Seeing a claim not as a simple application but as showing, through documents, which clause of the terms your benefit falls under makes it clear what to prepare. The same event can lead to different outcomes and timelines depending on the documents submitted.

The order a claim follows

Screens and procedures differ slightly by insurer, but the overall flow is the same. When something happens, first notify the insurer and check which benefits under your contracts apply. Then obtain the necessary documents from the hospital or elsewhere and submit them by app, website, fax, post or in person. The documents are assessed, and if more checking is needed the insurer asks for further documents or investigates. Once assessment ends, the benefit is paid to your nominated account with a statement. Some think claims can only go through an agent, but the policyholder or beneficiary can claim directly with the insurer. A change of agent, or an agent you cannot reach, does not affect your claim. App submissions usually mean photographing documents, so make sure no text is cut off or blurred, or you may be asked again.

• Notify the insurer of the event
• Find the relevant benefits across your contracts
• Obtain documents suited to the benefit type
• Submit by app, website, fax, post or in person
• Receive the payment statement after assessment and checks

Documents depend on the type of benefit

Documents are where people get lost most. What you need depends not on the policy's name but on the type of benefit you are claiming. Indemnity cover, which reimburses medical costs actually paid, is based on the medical bill receipt and itemised statement, and depending on the amount or situation you may need a document confirming the diagnosis. Diagnosis benefits that pay a fixed sum on diagnosis need a medical certificate naming the condition and, for some illnesses, confirmation such as a biopsy report. Hospital and surgery benefits use a certificate stating the period of stay and a surgery certificate naming the operation. Death benefits need proof of death and family relationship documents confirming the beneficiary. The claims guide in the insurer's app or website lists documents by benefit, so checking before visiting the hospital saves a second trip. Whether an original or a copy is required can also differ by document.

• Indemnity medical: bill receipt, itemised statement
• Diagnosis: certificate naming the condition, test reports for some illnesses
• Hospital or surgery: stay certificate, surgery certificate naming the operation
• Death: proof of death, family documents confirming the beneficiary
• Always: claim form, ID, bank account for payment

Indemnity and fixed-sum benefits pay differently

Benefits are calculated in two main ways. Indemnity cover returns the portion of medical costs actually paid that the terms define, so even with several indemnity policies you cannot receive more than you spent, and the policies share the payment. Fixed-sum benefits such as diagnosis, surgery or daily hospital payments are paid separately under each contract, so the same diagnosis can pay out under several. Knowing this clarifies where to claim what. For indemnity medical insurance in Korea, an amendment to the Insurance Business Act introduced electronic claims, in which medical institutions send documents to insurers electronically; it began with hospitals in October 2024 and is being extended in stages. Check official guidance to see whether your provider takes part and how to apply. Where it does not, you simply obtain the documents and submit them yourself as before.

Deadlines: three years and 'without delay'

The right to a benefit does not last forever. Under the Korean Commercial Act, a claim not exercised for 3 years is extinguished by limitation. The 3 years generally run from when the payment condition arose, so people sometimes let old medical receipts sit until the period has passed. Policy terms also require you to notify the insurer without delay when an event occurs. Late notice alone does not wipe out the benefit, but any loss that grew because of the delay may not be paid. Insurers have deadlines too: the terms set a time limit for payment after documents are received and the grounds on which it can be extended for investigation, and payment late without good reason must include interest for the delay. Recording the date you submitted lets you check for delay. Keeping receipts by treatment date and claiming the oldest first is a helpful habit.

Common misconceptions

Several misconceptions make people put off claiming. 'It's too small to bother' can be solved by collecting receipts and claiming together, as long as it is within the deadline. 'Claiming raises my premium' depends on the benefit. Fixed-sum claims generally do not raise your own premium, while the fourth generation of Korean indemnity medical insurance discounts or surcharges the next year's premium based on use of non-covered treatment. 'A claims history will block other insurance' is also inaccurate. A new policy's questionnaire asks whether you received treatment, not whether you claimed, so not claiming does not remove the duty to disclose. If you were treated, you must disclose it as far as the questionnaire asks, whether or not you claimed. In short, claiming is using your right, and the duty of disclosure is a separate obligation to keep.

• Too small, so skip it — collect and claim within the deadline
• Claiming raises premiums — depends on benefit and generation
• Claims history blocks joining — treatment is what's disclosed
• Must go through an agent — claim directly

How assessment and investigation work

Once documents are received, the insurer assesses whether the event meets a payment condition and how much to pay. If the amount is large or the course of diagnosis is unclear, it goes through a loss adjustment investigation, in which staff may check hospital records or interview the policyholder. You may be asked to consent to access to medical records or to a second doctor's opinion (a medical review). Before signing, check which records go to whom and for what purpose, and if the scope is too broad you can ask to narrow it to what is needed. If a medical review reduces or denies payment, ask for the grounds in writing. Separately from the insurer's investigation, there is also a system allowing the policyholder to appoint their own loss adjuster. Costs and procedures vary by case, so check in advance. In an interview with an investigator, state only facts you remember and avoid guessing. If the interview is written up as a statement, read it carefully before signing and ask for anything inaccurate to be corrected. A signed statement can later be used as grounds for a decision.

A checking order for claims

Following an order reduces repeat document requests and omissions for the same event. If you hold several contracts, one event may give rise to claims in more than one place. If you have listed your policies on one page, lay that table out and check in the order below. After submitting, note the reference number and date, and ask about progress if you hear nothing past the processing time the insurer gave. When you receive the payment statement, check that every item you claimed is reflected, and if any was reduced, why. Keep the completed checklist so you can reuse it next time. When requesting documents, tell the hospital administration office they are for an insurance claim and name the documents exactly; that reduces omissions. Some documents carry a fee, so request only what you need.

• Find the relevant benefit in every contract you hold
• Check documents needed per benefit and obtain them in one go
• With several indemnity policies, claim on each
• Record the reference number and date
• Compare the payment statement with what you claimed

A common case ①: a family member has died and you don't know their policies

After a family member dies, claims are often missed because no one knows what insurance they held. In Korea, you can check holdings through a lookup service run jointly by the life and non-life insurance associations, and through the government's one-stop inheritance service that looks up a deceased person's assets at once. Once you find a contract, check who is named as death beneficiary on the policy. If a beneficiary is named, that person claims; if not, the legal heirs do. With several heirs the paperwork grows, so asking the insurer first which documents are needed saves time. The 3-year limit applies to death benefits too, so even if settling affairs after the funeral takes time, don't delay the lookup itself. Lookups sometimes also show dormant or matured benefits that were never collected, so go through the results fully.

A common case ②: payment was refused or reduced

If you are told a payment is refused or reduced, first get the reason in writing. It usually states which clause of the terms the decision relied on, so find that clause in your own terms and compare the wording directly. If the diagnosis or classification of surgery is at issue, you can obtain an opinion from the treating doctor and resubmit; if the reason is a breach of the duty of disclosure, check the cancellation period and whether the omission relates to the event. You can raise an objection through the insurer's internal complaints channel and, if that fails, apply for dispute mediation with the Financial Supervisory Service. Mediation is less burdensome than a lawsuit, but you will need to decide the next step depending on the result. Organising all documents and call notes by date helps greatly. Arguing from the wording of the terms and documents is more effective at changing the outcome than responding emotionally.

Limits and disclaimer

This article explains the general flow and principles of insurance claims in Korea and is not legal advice on any individual case. Required documents, the thresholds for omitting documents on small claims, payment deadlines and investigation procedures, and the scope of electronic claims differ by insurer, product and time, and may change with reforms. Products, terms and regulations vary by company and over time, so check your terms, the insurer's claims guide and official Financial Supervisory Service guidance before claiming. The 3-year limitation cannot be undone once it passes, so if unsure, it is safer to submit first. If a dispute arises, consider the Financial Supervisory Service's mediation or help from a legal professional. Once a year or so, check whether any claims, however small, have been missed. Keeping claim documents and payment statements for a while after the deadline helps with later checks.