Will my reimbursement-type medical insurance cover a colonoscopy polyp removal?

It depends on how your policy defines 'surgery.' If the clause references 'NHI payment schedule Section 2-2-7 surgical procedures,' colonoscopy polyp removal falls under 2-2-6 'procedures/treatments' and is not covered. If your policy uses an open-ended definition such as 'invasive operations involving anesthesia, incision, or suturing,' you may have a case. After your procedure, ask the attending physician to confirm which NHI billing code was used, then compare it against your policy wording.

The insurer says my hospitalization wasn't medically necessary. Can I appeal?

Yes. First, request a free internal review from the insurer's claims department (they must respond within 14 days). If the outcome is unsatisfactory, file a complaint with the FSC Insurance Bureau (free). As a final step, apply for adjudication at the Financial Ombudsman Institution for Consumers (FISC), which costs NT$1,000 per case and produces a decision that is legally binding on the insurer for claims below a statutory threshold. Always attach a written supplementary statement from your attending physician explaining why outpatient treatment was insufficient.

Does the 2024 reimbursement-type insurance policy reform affect my existing policy?

No. Policies purchased before July 1, 2024, retain their original terms under a grandfather clause. Secondary copy (duplicate receipt) claims remain valid for those older policies. Only policies issued on or after July 1, 2024, are subject to the new rules requiring original receipts. If an agent suggests you cancel and switch to a new policy, verify first whether you would permanently lose the duplicate-claim privilege you currently hold.

What documents do I need to file a medical insurance claim in Taiwan?

Core documents: (1) a claim application form from your insurer; (2) an original attending physician's diagnosis certificate stating the diagnosis, procedure name, and hospitalization dates; (3) original hospital receipts (required for new policies issued after October 2024); (4) a discharge summary. It is also advisable to request a surgical record confirming the procedure name and NHI billing code, which strengthens your position in any dispute.

How much does FISC adjudication cost, and what is the success rate?

The fee is NT$1,000 per case. Insurance disputes are the most common category handled by FISC. Adjudication decisions are legally binding on insurers for claims below the statutory limit. Cases submitted with complete medical records and a written physician statement tend to receive more favorable outcomes, according to published FISC case data. There is no publicly reported single 'success rate,' but the process carries genuine weight and is worth pursuing for disputed claims.

How do I tell which surgery definition version my reimbursement policy uses?

Open your policy and find the section defining 'surgery' or 'surgical benefit.' If you see language referencing 'NHI Medical Service Payment Schedule, Part 2, Chapter 2, Section 7 (2-2-7),' your policy uses the restricted definition. If the definition instead describes 'invasive operations involving anesthesia, incision, or suturing' without citing a specific NHI section, coverage is broader. When in doubt, call your insurer directly or consult a lawyer with insurance law expertise.

Taiwan Health Insurance Claim Denied? 5 Policy Terms That Cost You

According to Life Insurance Association of the R.O.C. data, insurance complaints in Taiwan reached 7,068 cases in 2025, a 10-year high. Most of those disputes were not about buying too little coverage. They were about policyholders who had insurance, underwent procedures, and were then told their claims did not meet the policy conditions. Based on Financial Ombudsman Institution for Consumers (FISC) statistics for Q1 through Q3 of 2025, the largest category of disputes was "medical necessity for hospitalization" at 26.61 percent, followed by "surgery classification" at 8.73 percent.

I reviewed a friend's policy and found three clauses his agent had never explained: a surgery definition locked to the restricted 2-2-7 NHI schedule, a hospitalization necessity clause giving the insurer broad discretion, and a duplicate-claim provision on his two reimbursement-type policies that had just been affected by the 2024 regulatory change. This article translates that policy language into plain terms so you do not get caught off guard when you actually need to file a claim.

TL;DR

"Surgery is covered" only if the procedure falls within your policy's definition. The restricted 2-2-7 version excludes colonoscopy polyp removal, extracorporeal shock wave lithotripsy, and other common procedures.
The "medical necessity for hospitalization" clause allows insurers to use their own medical consultants to challenge your hospitalization after the fact. The defense is getting the attending physician to document necessity in the medical record during your stay.
Reimbursement-type policies purchased before July 1, 2024, retain the right to file duplicate claims using receipt copies. This feature is no longer available in new policies.
Three appeal tiers exist if your claim is denied: insurer internal review (free) → FSC Insurance Bureau complaint (free) → FISC adjudication (NT$1,000, binding on insurer).
Already denied and wondering what to do? Jump directly to the "What to Do After a Claim Denial" section.

This article focuses on reimbursement-type medical insurance. To confirm whether your policy qualifies, open your policy and find the "claim payment method" section. If it states "based on actual medical expenses incurred," it is a reimbursement type. If it states "daily flat amount of NT$XXX," it is a fixed-benefit type. The two operate on completely different claim mechanics.

Why Policy Language Is So Hard to Read

Before getting into the specific clauses, it helps to understand why policy documents are structured the way they are.

Policy language originates from the Financial Supervisory Commission's (FSC) "standard policy wording," which is a legal document, not a consumer guide. The standard wording is already dense, and each insurer adds its own custom clauses on top, making cross-company comparison even harder.

The agent incentive structure compounds the problem. Selling a policy earns a commission. Walking a client through every clause that might lead to a denied claim does not. There is no financial incentive for agents to explain "under which conditions this clause will not pay out." That is not a character flaw. It is the result of how commissions are structured.

Understanding this means accepting that reading your own policy is your responsibility, not your agent's obligation.

Will Surgery Be Covered? Understanding the 2-2-6 vs 2-2-7 Distinction

This is the most common and most overlooked structural trap in Taiwan medical insurance claims.

Taiwan's National Health Insurance (NHI) payment schedule classifies medical procedures into two main categories: Section 2-2-6 covers "procedures/treatments" and Section 2-2-7 covers "surgical procedures." The two have different legal status under NHI, but to most patients, a 2-2-6 "procedure" looks exactly like surgery. It involves anesthesia, instruments, and sometimes incisions.

The problem lies in how your policy defines "surgery." Reimbursement-type policies in Taiwan generally fall into three versions:

Version 1: Restricted 2-2-7 Definition The clause explicitly references "surgical procedures listed in the NHI Medical Service Payment Schedule, Part 2, Chapter 2, Section 7 (2-2-7)." Only procedures classified as surgery under NHI qualify. All 2-2-6 procedures are excluded.

Version 2: Open-Ended Definition The clause defines surgery functionally, as "invasive operations involving anesthesia, incision, or suturing," without citing a specific NHI section. Some 2-2-6 procedures may qualify under this wording.

Version 3: Mixed Definition Some policies use a general surgery definition but then list specific exclusions or add restrictions such as limiting coverage to hospital settings (excluding clinics).

Procedures commonly assumed to be covered but often excluded under 2-2-7 restricted policies include: colonoscopy polyp removal, extracorporeal shock wave lithotripsy for kidney stones, LASIK and PRK vision correction, skin lesion cryotherapy or electrocautery, PRP injections, and debridement procedures. All of these are classified under NHI billing code 2-2-6. If your policy uses the restricted 2-2-7 definition, claims for these procedures will be denied.

All three versions exist in the current market. There is no universal standard. The only reliable way to identify which version you have is to read your policy document. Agent oral assurances are not legally binding.

Practical action: Open your policy and find the "surgical benefit" section. Check whether the word "2-2-7" appears in the surgery definition. If you are planning a specific procedure, look it up on the NHI Administration website to confirm whether it is classified under 2-2-6 or 2-2-7. After any procedure, request a surgical record to verify the NHI billing code and keep it on file.

"Medical Necessity for Hospitalization": The Most Frequently Cited Denial Clause

A reader I know underwent minimally invasive surgery last year, stayed three days for post-operative observation, and then received a letter from his insurer stating that the hospitalization was not medically necessary and the claim amount would be reduced accordingly. His attending physician had clearly recommended hospitalization. The surgery proceeded as planned. But the insurer had its own position.

According to the FSC's Standard Policy Wording for Hospitalization Medical Expense Insurance, insurers are permitted to "consult medical professional opinions when necessary to review the medical necessity of the insured's hospitalization." This language gives insurers a legal opening: their own medical consultants can re-evaluate, after the fact, whether your hospitalization was required, even if the attending physician had already made that judgment.

FISC statistics for Q1 through Q3 of 2025 show this clause generated 2,192 adjudication applications, accounting for 26.61 percent of all cases, making it the single largest dispute category. Typical cases involve short hospitalizations (one to three days) for post-surgical observation, rest periods following minor procedures, and situations where outpatient treatment was feasible but the patient chose to stay.

Preventive strategy: Admission alone is not sufficient documentation. During your stay, ask the attending physician or nursing staff to record in the medical chart the specific medical reasons why hospitalization was necessary. Examples of useful language include "continued observation required due to post-surgical infection risk" or "condition unstable, cannot be managed in outpatient setting." At discharge, ask your attending physician to state in the diagnosis certificate that "hospitalization was medically necessary and the condition could not be adequately managed on an outpatient basis." These details seem minor but are critical evidence in an appeal.

Published FISC case data shows that applications supported by a written physician supplementary statement receive more favorable decisions than those relying on policy wording alone. This is the document most worth preparing carefully.

Old Reimbursement Policies: Possibly Your Most Valuable Insurance Asset

The FSC established rules governing reimbursement-type insurance duplicate claim practices in 2019. Effective July 1, 2024, enforcement was strengthened: new policies must accept only original receipts for claims and can no longer accept photocopies for duplicate filing. As of October 1, 2024, all secondary copy claim applications were discontinued for new policies.

There is an important exception: policies purchased before July 1, 2024, continue to operate under their original terms, and the right to file secondary copy claims is not retroactively removed.

This means if you hold a reimbursement-type policy issued before July 2024 that allows duplicate claims, that feature remains valid. You can use it until the policy expires or you voluntarily cancel it. It is a policy design that is no longer available for purchase.

Agents may approach you about switching to a new policy, often citing improved coverage. A policy switch generates a new commission for the agent. For you, it means permanently giving up the secondary copy claim privilege on your existing policy.

Decision framework for switching:

On which specific clauses does the new policy offer clear advantages (broader surgery definition, higher miscellaneous expense limit)?
What is the practical value of the secondary copy claim privilege on your current policy (do you hold multiple reimbursement-type policies)?
How does the new policy's premium compare to the current one?

If an agent tells you "the new one is better" without going through a clause-by-clause comparison, that is a sales pitch, not financial advice.

If you decide to switch, the sequence matters. First, get the full terms of the new policy in writing (email or messaging app), confirm the new policy is in force with the original document in hand, and only then cancel the old policy. Do not cancel before the new policy is active. The gap period leaves you with no coverage.

For a framework to evaluate your overall medical coverage needs from scratch, see Taiwan Insurance Self-Defense Guide: 6 Truths Agents Won't Tell You, which addresses the purchase decision layer.

Claims in Practice: 3 Things to Do While Still in the Hospital

Most people think claims processing starts after discharge. In practice, the actions with the greatest impact on your claim outcome happen while you are still in the hospital.

First: Confirm the exact procedure name and NHI billing code Do not accept informal descriptions like "polyp removal." Ask the attending physician or nursing staff to confirm which NHI billing section the procedure will be filed under (2-2-6 or 2-2-7), and make sure the diagnosis certificate includes the full formal procedure name. Insurers review based on what is written in the certificate, not your recollection of what the physician said.

Second: Get the medical necessity language into the documentation As described above. If you have any concern that the insurer might challenge the necessity of your stay, ask the attending physician to document the specific clinical reasons before discharge. Supplementary statements obtained after discharge are still valid but carry less weight than documentation issued at the time of discharge.

Third: Request a complete discharge summary and surgical record This combination of documents is the foundation of any appeal. Requesting them at discharge is easier and faster than doing so afterward. Hospital processing typically takes seven to fourteen business days, so requesting early avoids running up against claim submission deadlines.

Claims submission deadlines: Most policies require claims to be submitted within 30 to 90 days of discharge. The window varies by insurer. Confirm your policy's deadline immediately after discharge so that document preparation does not inadvertently push you past it.

What to Do After a Claim Denial: Three Appeal Tiers

Most people drop their case after a denial because they do not know the appeal channels exist, or they find the process discouraging. Three formal tiers are available, and the final tier produces a decision that is legally binding on the insurer.

Tier 1: Internal Review by the Insurer (Free) Contact the insurer's claims department directly and request a re-examination. Provide supplementary medical documents, especially a written statement from the attending physician. Insurers are legally required to respond within 14 days.

Tier 2: FSC Insurance Bureau Complaint (Free) If the internal review result is still unsatisfactory, file a formal complaint with the Financial Supervisory Commission (FSC) Insurance Bureau. This step creates compliance pressure on the insurer's regulatory record and sometimes prompts the insurer to reconsider its position.

Tier 3: FISC Adjudication (NT$1,000 per case) This is the most authoritative step. Decisions issued by the Financial Ombudsman Institution for Consumers (FISC) are legally binding on insurers for claims below a statutory monetary threshold (confirm the current threshold on the FISC website). Processing time varies depending on case complexity and application volume. Insurance disputes are the most common category in the FISC caseload, and cases accompanied by complete medical documentation, particularly a physician's supplementary statement, show higher rates of favorable outcomes based on FISC published data.

Risk Disclosure

This article is for educational purposes only and does not constitute personalized insurance advice. Policy terms vary by insurer. For specific claim determinations, your original policy document is the authoritative reference. For complex claim disputes or high-value disagreements, consulting a lawyer with insurance law expertise is advisable. This article does not recommend or compare any specific insurer or insurance product. Statistics cited are sourced from FISC and FSC official publications and do not represent guaranteed outcomes for any individual claim.

Action Items

If you have a medical insurance policy on hand right now, do these three things:

Find the "surgical benefit" section and check whether the surgery definition contains "2-2-7."
Find the "medical necessity for hospitalization" clause and confirm the specific conditions under which the insurer can challenge your stay.
Check whether your policy purchase date is before July 1, 2024. This determines whether you have secondary copy claim rights.

If you are already in a claim dispute, identify which appeal tier you are currently at, prepare a written supplementary statement from your attending physician, and submit it to the next tier.

If you did not review these details when you first purchased your policy, it is not too late. Before your next renewal, use this purchase framework as a checklist. It helps you avoid the traps that most agents will not proactively flag.