A serious illness can mean paying for treatment while managing regular household expenses at the same time. If you need to take time away from work, the loss of income can add another financial concern. A health insurance policy may cover eligible medical expenses, while critical illness insurance can provide a fixed lump sum when a specified condition covered by the policy is diagnosed.
What Is Critical Illness Insurance and How Does It Work?
Critical illness insurance can provide a fixed lump sum if you are diagnosed with a specified illness covered by the policy or undergo a specified procedure, depending on the terms of your cover.
This works differently from a regular health insurance policy, which generally covers eligible medical expenses under its terms. With critical illness cover, the benefit is linked to a specified illness or medical event rather than the individual hospital bills you incur.
The amount you can receive, the illnesses covered, and the conditions you need to meet vary between policies. Depending on the terms, the lump sum may help you manage expenses such as:
- Household costs if you need time away from work
- Additional expenses during treatment and recovery
- Other expenses you may have while dealing with a serious illness
- Other financial commitments, where permitted under the policy
Which Conditions May Be Covered?
Some critical illness policies cover conditions such as:
- Cancer of specified severity
- First heart attack of specified severity
- Open chest coronary artery bypass graft, or CABG
- Kidney failure requiring regular dialysis
- Major organ or bone marrow transplant
- Stroke resulting in permanent symptoms
- Permanent paralysis of limbs
These are examples of conditions that may appear in critical illness policies. The exact list depends on the policy you choose.
It is also important to read how each illness is defined. The policy may set specific requirements around the severity of the condition, symptoms, medical evidence, or other criteria. Simply seeing an illness listed does not tell you all the conditions that apply to the benefit.
What Features and Conditions Should You Check?
The following details can affect how the benefit applies:
| Feature | What You Should Check |
| Covered illnesses | Which conditions are listed and how each one is defined |
| Sum insured | The fixed amount specified for the benefit |
| Waiting period | Whether a waiting period applies and when it begins |
| Survival period | Whether you need to survive for a specified period after diagnosis |
| Exclusions | Conditions or circumstances that the policy does not cover |
| Claim documents | Medical reports and other documents required under the policy |
Waiting and survival periods may not be identical across all products.
How Does a Critical Illness Claim Work?
When you need to make a claim, you may be asked to provide:
- Diagnosis records:Medical reports confirming the diagnosis
- Medical history:Relevant records relating to your condition
- Investigation reports:Test results, scans, or other diagnostic reports
- Treatment records:Documents relating to the treatment received
- Other documents:Any additional information or documents mentioned in your policy
The insurer checks the claim against the policy terms and the definition of the covered illness. A diagnosis on its own may not be enough if the policy has specific medical conditions that need to be met.
Conclusion
Critical illness insurance is about knowing what happens if a specified serious illness affects you. The lump sum benefit can provide financial support when the conditions set out in the policy are met, but the details matter. Before choosing a cover, check the illnesses listed, their definitions, waiting or survival periods, exclusions, and claim requirements. If you already have a health insurance policy, look at how the two types of cover differ and what each one provides. The policy wording should always be your final reference for the applicable terms and conditions.


