A health insurance policy is only as good as the day you need it. Every year, many families in India discover at the hospital billing counter that their cover is too small, that a waiting period they never read about is still running, or that part of the bill will not be paid. The painful truth is that most of these problems come from avoidable buying mistakes, not bad luck.
The rules have moved in policyholders’ favour: shorter waiting periods, a 5-year moratorium, faster cashless approvals, and no GST on individual health premiums since 22 September 2025. But a better rulebook only helps if the policy underneath it is chosen well.
This guide covers the 12 most common health insurance mistakes, what goes wrong at claim time, and exactly how to fix each one. Whether you are buying your first policy, renewing, or arranging cover for ageing parents, read this before you pay your next premium. (The people and amounts in the examples are illustrative, not real cases.)
In this guide
- Choosing a policy only because the premium is cheap
- Buying too low a sum insured
- Ignoring waiting periods
- Hiding or misreporting pre-existing conditions
- Overlooking room rent limits, sub-limits and co-payment
- Depending only on your employer’s group cover
- Not checking the hospital network and cashless process
- Skipping exclusions and non-payable items
- Not adding a super top-up, and buying the wrong riders
- Judging an insurer by claim settlement ratio alone
- Delaying the purchase, or letting the policy lapse
- Mishandling the claim itself
1. Choosing a policy only because the premium is cheap
The cheapest premium is often the most expensive choice on the day you claim. A low price usually means something has been trimmed: a smaller sum insured, a room rent cap, a co-payment, longer waiting periods or a thin hospital network.
The pricing picture is also simpler now. Individual health policies, including family floaters, have carried no GST since 22 September 2025, so the premium you see is the base premium. Group policies still attract 18% GST (Department of Financial Services). Like-for-like comparison is easier, so spend your effort on what the premium actually buys.
Example: A family of four compares two plans. Plan A costs ₹18,000 a year with ₹10 lakh cover and no room rent cap. Plan B costs ₹14,500 with ₹5 lakh cover and a 20% co-payment. Plan B saves ₹3,500 a year, but on a ₹4 lakh hospital bill the co-payment alone is ₹80,000, which wipes out about 23 years of that saving.
How to fix it: Compare plans on these points before you look at price:
- Sum insured, and whether it is restored after a claim
- Room rent limit, sub-limits and co-payment
- Waiting periods for pre-existing and specific diseases
- Network hospitals near your home
- Claims support and the insurer’s track record
2. Buying too low a sum insured
A ₹3 lakh or ₹5 lakh cover that felt generous a few years ago can be used up by a single serious admission today. Surgery, ICU days, implants, investigations and medicines in a private multi-speciality hospital can run into several lakhs.
Medical costs also keep rising. As an illustration, at 10% a year, hospital costs roughly double in about seven years. A cover that looks adequate today may fall short before you have renewed it seven times.
Two related mistakes follow from this:
- Relying on one floater for everyone. A family floater shares one sum insured among all members. If one person has a long hospital stay, the others are left with whatever remains.
- Adding elderly parents to your own floater. Floater premiums are usually priced on the eldest member’s age, so adding parents can raise the cost sharply and drain the shared limit. A separate policy for parents is usually the cleaner choice.
How to fix it: Many advisors use ₹10 lakh per adult as a starting point in a city with private hospitals, then raise the total with a super top-up (see mistake 9). Treat this as a planning guideline, not a rule. The right number depends on your city, age, family history and budget.
3. Ignoring waiting periods
A policy you cannot use yet is not protection. Every health policy carries waiting periods, and the ones people miss are exactly the ones that decide whether a claim is paid.
| Waiting period | What it blocks | Typical length |
|---|---|---|
| Initial waiting period | Claims for illness (accidents are usually covered from day one) | Commonly 30 days |
| Pre-existing disease (PED) | Treatment for conditions you had before buying | Up to 36 months, the outer limit set by IRDAI from 1 April 2024 (Business Today) |
| Specific disease waiting period | Named procedures such as hernia, cataract, joint replacement, kidney stones | Commonly 1 to 3 years, varies by insurer |
| Maternity | Delivery and newborn cover | Varies widely, often several years |
Example: Meera, 45, buys a policy because she plans a knee replacement next year. Her plan has a two-year waiting period for joint replacement. The surgery falls in year one, so the claim is rejected and she pays the full bill herself.
How to fix it:
- Ask for the waiting-period details in writing before you pay.
- Prefer plans with shorter pre-existing and specific-disease waits.
- Buy early, while you are healthy and nothing is planned, because every waiting period starts only on the day you buy.
- If you switch insurers, use portability so the waiting time you have already served is carried forward.
4. Hiding or misreporting pre-existing conditions
Non-disclosure is the most avoidable reason for a rejected claim. People leave out a high BP reading, a thyroid tablet or an old surgery because they fear a higher premium or an outright refusal. The insurer then finds it in the hospital records at claim time.
Here is how the rules work:
- Conditions diagnosed or treated in the 3 years before your first policy are treated as pre-existing. Declared ones become payable after the waiting period, which cannot exceed 36 months.
- After 60 months of continuous cover, called the moratorium period, an insurer cannot contest a claim for non-disclosure or misrepresentation, except in cases of proven fraud. Time served with a previous insurer counts if you port your policy (Business Today).
- Before that point, an undisclosed condition can lead to a rejected claim and, in serious cases, a cancelled policy.
Example: Ravi, 38, leaves diabetes off his proposal form. In year three he is admitted for a cardiac procedure, and the hospital records show diabetes for six years. The claim is rejected for non-disclosure. Had he declared it, the plan would have priced it in and the claim would have been decided on the policy’s terms.
How to fix it:
- Declare everything the form asks: diagnoses, regular medicines, past surgeries, tobacco and alcohol use.
- Read every answer on the proposal form yourself before signing, even when an advisor fills it in.
- Keep old prescriptions and reports so your answers are accurate.
- Accept an honest, slightly higher premium over an unpaid claim later.
5. Overlooking room rent limits, sub-limits and co-payment
Three small clauses can quietly shrink a ₹10 lakh claim. They sit in the fine print, and most buyers meet them for the first time at the hospital billing counter.
- Room rent limit. Many plans cap the daily room rent, for example at 1% of the sum insured. If you choose a costlier room, insurers often apply proportionate deduction: all room-linked charges, such as doctor fees, nursing and procedure charges, are cut in the same ratio, not just the room rent.
- Sub-limits. Some policies cap specific treatments, such as cataract or joint replacement, or limit ICU charges, however large your sum insured is.
- Co-payment. You pay a fixed percentage of every claim. It is common in senior citizen plans and in some low-premium plans.
Example: A plan caps room rent at ₹5,000 a day, and Rohan takes a ₹8,000 room. The insurer pays 5,000 ÷ 8,000 = 62.5% of the room-linked charges. On ₹2,00,000 of such charges it pays ₹1,25,000, and Rohan pays ₹75,000 himself, even though his sum insured is nowhere near exhausted.
How to fix it:
- Prefer plans with no room rent limit, or cover for a single private room.
- Avoid disease-wise sub-limits where you can. If a plan has them, know the exact amounts.
- Choose zero co-payment while you are young, and accept a co-payment only knowingly, in exchange for a premium saving you have compared.
- Ask your advisor to show a worked example of proportionate deduction for the plan you are considering.
6. Depending only on your employer’s group cover
Employer cover is a useful bonus, but it is not a safety net you own. It ends when the job does, which is often when you can least afford a gap: a layoff, a career break, a move to a company with no cover, or retirement.
The main risks are:
- It is tied to the job. If you leave, the cover goes, and an individual policy bought later starts every waiting period from zero.
- The limits are often modest. The sum insured may be shared across the family, and parents are frequently not covered.
- Terms can change. Your employer can switch the insurer or alter the limits at any renewal.
- You buy later, at a worse moment. You will be older and possibly dealing with a health condition, so the premium is higher and the proposal form asks harder questions.
How to fix it: Buy your own base policy in your 20s or 30s and treat employer cover as an extra layer on top. Your waiting periods and your 5-year moratorium then keep running in your own name, whatever happens to your job. Also ask your HR team whether the group policy offers conversion to an individual policy when you leave.
7. Not checking the hospital network and cashless process
A long network list means little if your preferred hospital is not on it. Cashless treatment works only at network hospitals. Anywhere else, you pay upfront and claim reimbursement later.
The rules now favour the patient. IRDAI’s May 2024 master circular requires insurers to decide a cashless request within one hour and to give final authorisation within three hours of the hospital’s discharge request. If the insurer is late beyond three hours, the extra hospital charges are borne by the insurer, not by you (Moneylife). These timelines only help when your hospital is already linked to your insurer.
What to check before you buy:
- Whether the hospitals you would actually use are in the network in your city: the one nearest your home, your family doctor’s hospital, and a good cardiac or cancer centre. In Thiruvananthapuram or any other Kerala district, check this before you buy, not at the admission desk.
- Whether those hospitals offer cashless for both planned and emergency admissions.
- How reimbursement works as a fallback: which documents are needed and how long it takes.
- Whether claims are handled by the insurer directly or through a third-party administrator (TPA).
How to fix it: List the 3 to 5 hospitals you would realistically choose and confirm each one is in the network of every plan you shortlist. Network lists change, so confirm again before any planned admission.
8. Skipping exclusions and non-payable items
What a policy does not pay is as important as what it covers, yet the exclusions are the part most people never read. Claims get trimmed in three places:
- Permanent exclusions. Common examples include cosmetic treatment and most dental work unless it is caused by an accident. The list differs by insurer, so read it for your plan.
- Non-payable items. Hospital bills include items that insurers treat as non-medical or consumables, such as gloves, masks, and registration or administration charges. These are deducted from the claim, and on a large bill the total is meaningful. Insurers publish their lists, and some plans offer a consumables add-on.
- Treatment-specific conditions. Day-care procedures, home (domiciliary) treatment, AYUSH treatment, and pre- and post-hospitalisation expenses are covered differently from plan to plan. In Kerala, where Ayurveda treatment is common, check whether AYUSH is covered, in what type of facility, and up to what limit.
How to fix it: Read the exclusions and the benefits schedule before you buy, and ask these questions:
- How many days of pre- and post-hospitalisation expenses are covered?
- Which day-care procedures are covered?
- What is the AYUSH limit, and which facilities qualify?
- Is there a consumables cover, and what does it include?
- Which non-payable items will usually be deducted?
9. Not adding a super top-up, and buying the wrong riders
A super top-up is usually the cheapest way to take your total cover from ₹10 lakh to ₹50 lakh or more. You choose a deductible, say ₹10 lakh. Once your claims in a policy year cross that amount, the super top-up pays the rest, up to its own sum insured. Because it only responds to large bills, its premium is far lower than a base policy of the same size.
Example: You hold a ₹10 lakh base policy and a ₹40 lakh super top-up with a ₹10 lakh deductible. On a ₹30 lakh hospital bill, the base policy pays the first ₹10 lakh and the super top-up pays the remaining ₹20 lakh.
Riders cause the opposite problem. They are useful when matched to a real need, but they are often bought in place of adequate base cover:
- Critical illness cover pays a lump sum on diagnosis of listed illnesses. It does not replace hospitalisation cover, and the definitions and survival period matter.
- Personal accident and hospital cash covers each solve a different, narrower problem.
- Overlapping riders add cost without adding protection.
How to fix it: Build in this order: a strong base policy, then a super top-up, then only the riders that fit a real need. Critical illness cover, for example, makes sense when your household income depends on you and recovery could take months.
10. Judging an insurer by claim settlement ratio alone
The claim settlement ratio (CSR) shows what share of the claims an insurer received were paid. It is a useful signal, but it hides how a claim actually feels. A partly paid claim can still count as settled, and the ratio says nothing about delays, deductions or friction at the hospital.
A related figure, the incurred claim ratio, compares claims paid with premium earned. Neither number alone tells you whether your claim will be smooth.
Look at these as well:
- Cashless approval and discharge speed in practice, not just on paper
- Size and quality of the hospital network in your area
- Complaint and grievance record published in regulatory disclosures
- How the insurer has behaved on premium increases at renewal
- Real claim experiences from people in your city, including your advisor’s other clients
How to fix it: Shortlist three insurers, compare their CSR together with the points above, and ask your advisor for real examples of how claims were handled locally.
11. Delaying the purchase, or letting the policy lapse
Every year you wait costs you twice. Premiums rise with your age at entry, and so does the chance that a condition such as high blood pressure or diabetes appears. Once a condition is on record, insurers may add waiting periods, loadings or exclusions. Every waiting period also starts only on the day you buy.
Lapsing is the second trap. If you miss the renewal date and the grace period ends (commonly around 30 days, but check your policy), the policy can lapse. You may then lose continuity benefits: waiting periods can restart, moratorium progress and no-claim bonus can be lost, and the insurer may ask for fresh medical underwriting.
Example: Anita is one year short of the 5-year moratorium when she misses her renewal by 40 days. On renewing late, she may be offered a fresh policy, with every waiting period and the moratorium clock starting again.
How to fix it:
- Buy early, ideally while you are young and healthy.
- Switch on auto-renewal or set reminders, and pay before the due date.
- If you are unhappy with your insurer, port to another one instead of letting the policy lapse. Portability lets you move while keeping waiting-period credit, moratorium progress and no-claim bonus, subject to the new insurer’s acceptance. Apply well ahead of the renewal date.
12. Mishandling the claim itself
Even a valid claim can be delayed or reduced when the process is skipped. A little preparation before a hospital stay saves a lot of stress during it.
Before and during admission
- For a planned admission, inform the insurer or TPA and get pre-authorisation before you are admitted. Check your policy for the exact notice period.
- For an emergency, inform the insurer as soon as you can. Many policies expect intimation within 24 hours, so check yours.
- Carry your health card or e-card, ID proof and policy number.
- Compare the hospital’s estimate with the cashless approval, and ask what you will be expected to pay yourself.
After discharge
- Keep the discharge summary, itemised bills, investigation reports, prescriptions and payment receipts. Keep your own copies even when the hospital or TPA collects documents for you.
- If you hold more than one health policy, you can claim under any of them. The insurer of the policy you choose becomes the primary insurer and coordinates with the others for any balance (Moneylife).
If the claim is rejected or cut
- Under IRDAI’s circular, a claim cannot be rejected without approval from the insurer’s internal review committee, and a rejection or part-payment must be explained with reference to specific policy terms.
- Ask for the reasons in writing, then raise a grievance with the insurer.
- If you are not satisfied, escalate to the Insurance Ombudsman. The insurer’s grievance reply must carry the ombudsman’s contact details, and an ombudsman award must be honoured within 30 days or the insurer pays a penalty of ₹5,000 a day.
Quick checklist before you buy or renew
Use this as a final test for any health insurance policy:
- The sum insured suits your city and family (many advisors start at ₹10 lakh per adult), with a super top-up planned for larger bills
- There is no room rent cap, or a cap that suits the hospitals you would actually use
- There are no disease-wise sub-limits, and no co-payment unless you chose it knowingly
- The pre-existing disease waiting period is as short as the insurer offers, and never above 36 months
- Every medical condition, regular medicine and habit is declared on the proposal form
- Your preferred hospitals are in the cashless network
- You have read the exclusions, non-payable items, AYUSH and day-care terms
- Your parents have their own policy
- You do not depend only on employer cover
- Auto-renewal or a reminder is set before the due date
- You have read the full policy document within the 30-day free-look period
- Claim documents and policy details are saved where your family can find them
Frequently asked questions
How much health insurance cover is enough for a family?
There is no single number. Many advisors suggest at least ₹10 lakh per adult as a base in a city with private hospitals, plus a super top-up for large bills. Your city, ages, family history and budget should decide the final figure.
What is the waiting period for pre-existing diseases now?
IRDAI has capped it at 36 months of continuous cover, down from 48 months, effective 1 April 2024. Some insurers offer shorter waits, so compare before you buy.
Can an insurer reject my claim after five years?
After 60 months of continuous cover, an insurer cannot contest your policy for non-disclosure or misrepresentation, except in cases of proven fraud. Exclusions written into the policy can still apply, so a claim for an excluded treatment can still be declined.
Is GST charged on health insurance now?
No GST is charged on individual health insurance policies, including family floaters, from 22 September 2025. Group and employer-sponsored policies still attract 18% GST.
Is my employer’s health insurance enough?
Usually not. It ends when you leave the job, the limits are often modest, and any individual policy you buy later starts its waiting periods from zero. Keep your own base policy and treat employer cover as an extra layer.
Can I switch my health insurer without losing benefits?
Yes, through portability. You can move to another IRDAI-licensed insurer while keeping waiting-period credit, moratorium progress and no-claim bonus, subject to the new insurer accepting your proposal. Apply well before your renewal date.
What is a super top-up plan, and do I need one?
It is a low-cost plan that pays once your claims in a year cross a chosen deductible. If your base cover is ₹10 lakh or less, it is usually the most economical way to raise your total protection.
What should I do if my claim is rejected?
Ask for the reasons in writing, with the policy clauses cited. Raise a grievance with the insurer, and if you are still not satisfied, approach the Insurance Ombudsman. An experienced advisor can help you judge whether the rejection is valid.
Not sure your health policy would hold up at claim time?
Most of the mistakes above are easy to fix, but only if someone spots them before a hospital bill does. Trustiffy is an IRDAI-licensed insurance agency in Kaimanam, Trivandrum, helping families and businesses across Kerala with health, motor, fire and liability insurance.
Send us your current policy. Our team will check it against these 12 mistakes, explain the gaps in plain language, and suggest suitable options for your family’s needs and budget.
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This article is for general awareness and is not personal advice. Policy terms, benefits and exclusions differ by insurer and plan, so always read the policy wording before you buy. Insurance is the subject matter of solicitation.
Sources
Regulatory points were checked on 23 October 2026.
- Business Today: IRDAI reduces pre-existing disease waiting period from 4 to 3 years (waiting period and moratorium)
- Moneylife: Decide cashless request in 1 hour, final authorisation within 3 hours (IRDAI master circular on cashless and claims)
- Department of Financial Services: GST exemption on individual health insurance (GST)