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Gaurav Agarwal

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Insurance Basics

Health Insurance Terms Explained in Simple Words

By Gaurav Agarwal · 11 Oct 2026 · 5 min read

Sum insured, cashless claims, waiting periods, co-payment and more, explained in plain language so you can read your health policy with confidence.

A health insurance policy is full of words that sound similar but mean very different things. Knowing them before you buy helps you avoid surprises when you actually need to use the policy in a hospital.

Sum insured vs sum assured

  • Sum insured is the maximum amount a health policy will pay for covered hospital bills in a policy year. You are paid the actual expenses, up to this limit.
  • Sum assured is used in life insurance. It is a fixed amount paid on death or maturity, whatever the actual loss.

So a health policy "insures" your bills, while a life policy "assures" a fixed amount.

Cashless vs reimbursement claims

  • Cashless claim: You get treated at a hospital that is in the insurer's network. The hospital sends the bill to the insurer (usually through a third-party administrator, or TPA), and the insurer pays it directly. You pay only items that are not covered.
  • Reimbursement claim: You pay the hospital yourself, then send bills, reports and discharge papers to the insurer to get your money back.

A network hospital is a hospital that has an agreement with your insurer for cashless treatment. The list changes from time to time, so check it before a planned admission.

Waiting periods and pre-existing diseases

A pre-existing disease (PED) is an illness or condition you already had, or were diagnosed with, before buying the policy, such as diabetes or high blood pressure. Always declare these honestly in the proposal form. Hiding them can lead to a claim being rejected.

Health policies have different kinds of waiting periods:

  • Initial waiting period: A short period right after the policy starts when illness-related claims are not paid. Accidents are generally covered from the first day.
  • Pre-existing disease waiting period: Declared conditions are covered only after a waiting period stated in the policy.
  • Specific illness waiting period: Some listed treatments (for example, certain surgeries) are covered only after a waiting period stated in the policy.

Waiting periods count from your first policy, so renewing on time without a break is important.

Co-payment, room rent limit and sub-limits

  • Co-payment: A fixed share of every admissible claim that you pay yourself. For example, a 10% co-pay means you pay 10% and the insurer pays 90%. It is common in senior citizen plans.
  • Room rent limit: A cap on the hospital room charges the policy will pay per day. If you choose a costlier room, many policies reduce other related charges in the same proportion, not only the room bill.
  • Sub-limits: Caps on particular treatments or items, such as a fixed maximum for cataract surgery, even if your sum insured is higher.

Deductible

A deductible is the amount you agree to bear first in a claim or a policy year, before the insurer starts paying. Choosing a deductible usually lowers the premium. It is the main feature of super top-up plans.

Restoration benefit and no claim bonus

  • Restoration benefit: If your sum insured gets used up during the year, the insurer refills it, fully or partly, for later claims in the same year. Conditions vary, so read how it works in your policy.
  • No claim bonus (NCB): A reward for a claim-free year, usually given as an increase in sum insured at renewal without extra premium. The increase and its upper limit are stated in the policy.

Family floater vs individual policy

Point Individual policy Family floater
Who is covered One person Whole family under one policy
Sum insured Separate for each person One shared amount for everyone
Best suited for Older members, people with health issues Young families with low claim chances
Premium Calculated per person Mostly based on the eldest member

Super top-up

A super top-up plan pays once your total hospital bills in a policy year cross the chosen deductible. It is a low-cost way to increase cover on top of a base policy or employer cover.

Example (illustration only): Ramesh has a base policy of ₹5,00,000 and a super top-up of ₹10,00,000 with a ₹5,00,000 deductible. In one year he has two hospital bills of ₹3,00,000 and ₹4,00,000, totalling ₹7,00,000. The base policy pays the first ₹5,00,000. The super top-up pays the remaining ₹2,00,000, because his yearly total crossed the deductible. A normal top-up checks each claim separately, so it may have paid nothing here.

Portability

Portability lets you move your health policy from one insurer to another at renewal while keeping credit for the waiting periods you have already completed, as per the rules. Apply well before your renewal date, and do not let the old policy lapse.

Free-look period

After you receive a new policy, you get a free-look period to read it. If you do not like the terms, you can return it and get a refund, after small deductions allowed by the rules, such as for medical tests and the days you were covered. The exact number of days is printed in your policy.

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