Increasing Your Health Insurance Sum Insured in 2026? The Waiting Periods Restart on the New Portion — Here's How to Plan Around It

By Nitish Bharadwaj · Published Sep 29, 2026 · 7 min

When you increase your health insurance sum insured at renewal, the original cover keeps all the waiting-period credit you have earned, but the added amount starts fresh. The initial 30-day wait, specific-disease waits, the pre-existing disease wait of up to 36 months and the 60-month moratorium all run separately on the enhanced portion. Conditions diagnosed while you were insured can count as pre-existing for the new amount. Upgrade while healthy, disclose honestly, and compare the cost with a super top-up.

Four years ago you bought a ₹5 lakh family floater. Hospital bills have gone up since then, so at this year's renewal you raise the cover to ₹15 lakh. The new policy schedule says ₹15 lakh, and it's easy to assume all of it is available for any claim from day one. It isn't. The original ₹5 lakh keeps every bit of waiting-period credit you've earned. The extra ₹10 lakh starts from zero, with its own waiting periods and its own moratorium clock. If you don't know this, a big claim in the next two or three years can pay far less than you expect.

The Rule: Fresh Waiting Periods Apply Only to the Enhanced Amount

IRDAI's Master Circular on Health Insurance Business, issued on May 29, 2024, is clear on this. When the sum insured is increased at renewal, waiting periods apply afresh only to the increased portion. The same goes for the moratorium: the 60 continuous months that protect you from non-disclosure disputes are counted from the date of enhancement, but only for the enhanced limit. Your old cover is not reset. This is not a 2026 change. The rule has existed in some form for years, and the 2024 circular simply restated it next to the shorter caps it introduced: pre-existing disease waits of at most 36 months and a moratorium of 5 years instead of 8.

In practice, one policy now has two layers, each running its own clocks. Insurers settle claims by looking at which layer is eligible for that illness on the date you're admitted.

The Trap: Conditions You Developed While Insured

This is the part most people miss. Say you were diagnosed with diabetes in the policy's second year. For the original ₹5 lakh, diabetes is not a pre-existing disease, because it started while you were already covered. For the enhanced ₹10 lakh, the relevant start date is the enhancement date, and you had diabetes before that date. Most insurers therefore treat it as pre-existing for the new portion. They will ask you to declare it on the enhancement proposal, and the 36-month pre-existing wait applies to the extra cover for diabetes and its complications.

Because of this, the insurer can also underwrite the enhancement separately. An increase in sum insured isn't a right the way renewal is. The insurer can ask for a fresh health declaration or medical tests, accept the increase with a premium loading, cap it at a lower amount, or refuse it, while still renewing your existing cover on the old terms. Hiding a new diagnosis to get the increase approved is the worst option. Until the enhanced layer finishes its own five-year moratorium, non-disclosure is exactly the ground an insurer can use to reject a claim on it.

What This Looks Like at Claim Time

Take the same family. Eighteen months after the upgrade, the policyholder, who was diagnosed with diabetes during the policy's second year, needs a cardiac procedure linked to diabetic heart disease. The bill is ₹8 lakh. The original ₹5 lakh layer is fully eligible. The enhanced ₹10 lakh layer is still inside its 36-month pre-existing wait for that condition. The insurer pays up to ₹5 lakh, less any deductions under your policy's room rent or co-payment terms, and the family pays about ₹3 lakh themselves. If the same person had been in a road accident instead, the full ₹15 lakh would have been available.

Five Ways to Upgrade Without Getting Caught

1. Upgrade early, while you are healthy. An increase in your early 30s with a clean medical history has no new pre-existing conditions to wait on. The same increase after a diagnosis carries a 36-month gap.
2. Price a super top-up against the base enhancement. A super top-up is a new policy, so its waiting periods also start from zero, exactly like an enhanced layer. The protection gap is the same, but the premium is often much lower. See our super top-up guide for how deductibles work.
3. Increase in steps, not in one jump. Raising cover by a moderate amount every few renewals staggers the layers, so a smaller slice is inside its waiting periods at any given time.
4. Keep emergency savings for the gap years. For the first three years after an upgrade, plan as if only your old sum insured is fully available for existing conditions.
5. Port and enhance carefully. When you port, continuity credit carries over only up to your previous sum insured. Any higher amount you choose at the new insurer is a fresh layer with fresh waits.

What About No-Claim Bonus?

Cumulative bonus, the extra sum insured you earn for claim-free years, isn't the same as buying a higher sum insured, and most policies don't apply fresh waiting periods to it. Wordings do vary, though, and some plans that let you convert the bonus into base cover at renewal treat the converted amount as an enhancement. Read the definitions section of your policy. Our explainer on no-claim bonus vs restoration benefit covers how the two actually add to your cover.

The bottom line: increasing your sum insured is still usually the right move, because medical inflation will make a ₹5 lakh policy inadequate for most families. Just do it knowing that the new money has its own clock, and do it before your health history gets longer. If you're also working through an existing condition, read our guide to health insurance for pre-existing diseases and the five-year moratorium rule together, because those two rules decide how the enhanced layer behaves.