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Critical illness insurance

What is critical illness insurance and which conditions does it cover?

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Written by  Rachel Ditchburn
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Reviewed by  Katie Bishop
6 min read
Updated: 13 Aug 2025

Key takeaways

  • Critical illness insurance is a life insurance add-on that pays out if you are diagnosed with a serious health issue

  • Different insurers cover different conditions but cancer, heart attacks and strokes are almost always included

  • Policies won't payout if conditions are easily treatable, temporary, pre-existing, or related to lifestyle choices

A family playing football in a field the boy is about to score against his dad

What is critical illness insurance?

Critical illness insurance is typically an optional addition to standard life insurance policies. If you are diagnosed with an illness covered by the policy, you'll receive a lump sum payment.

This can help lift the financial burden that can accompany a severe health condition, especially as your capacity to work might be diminished. Your critical illness insurance payout can be used to cover a variety of costs, from medical treatment to daily living expenses.

Which conditions are covered by critical illness insurance?

The conditions covered can vary depending on the insurer, but there are some illnesses that are included in most policies:

Core illnesses typically covered

The core illnesses covered by almost all policies are:

  • Cancer

  • Heart attack

  • Stroke

It’s important to note that not all instances of these illnesses will trigger a payout. The severity of the condition is a critical factor in determining whether a claim is accepted.

Most policies adhere to the definitions set out by the Association of British Insurers (ABI), which specifies what counts as a “critical illness”.

Common conditions covered

In addition to the core illnesses, critical illness insurance often extends to a wider range of conditions including but not limited to:

  • Alzheimer’s disease (before a certain age)

  • Aorta graft surgery

  • Benign brain tumours

  • Blindness

  • Coma

  • Coronary artery by-pass grafts

  • Deafness

  • Heart valve replacement/repair

  • Kidney failure

  • Loss of speech

  • Loss of hand/foot

  • Major organ transplant

  • Motor neurone disease (before a certain age)

  • Multiple sclerosis

  • Paralysis of limbs

  • Parkinson’s disease (before a certain age)

  • Third-degree burns

  • Total permanent disability

Cover is subject to severity requirements, which are detailed in the policy documents. The conditions covered can vary depending on your provider and policy.

Types of cancer not usually covered

Although cancer is considered a core illness, there are some types of cancer that are typically not included in critical illness cover:

  • Non-invasive cancers

  • Cancer in-situ

  • Pre-malignant cancer

  • Cancers with borderline malignancy

  • Cancers with low malignancy potential

Exclusions from critical illness insurance

It's also important to be aware of what's not covered. Exclusions can include conditions that are easily treatable, temporary, pre-existing, or related to lifestyle choices.

Do I need critical illness cover?

Deciding whether you need critical illness cover is a personal choice. It may be particularly beneficial if you have dependents who rely on your income.

Pros of critical illness cover

  • Provides financial support for dependents and family

  • Helps cover loan costs, such as mortgages

  • Assists with care and lifestyle adjustments due to health conditions

Cons of critical illness cover

  • Premiums can be costly, depending on individual risk factors

  • The policy pays out only once and becomes invalid after a claim or upon death

  • Not all illnesses are covered, and cover is determined by the severity of the condition

How much does critical illness insurance cost?

The table shows the average monthly prices paid by our customers for life insurance with a critical illness add-on.

Average price means 51% of customers paid this amount or less. Cheapest price means 10% of customers paid this price or less.

Cheapest Price (Per Month)

Average Price (Per Month)

£0^

£41.35^

Adding critical illness cover significantly increases the price of a life insurance policy. The average price our customers pay for life insurance without critical illness cover add on is £19.89^ a month.

How do I find the best deals for life insurance with critical illness cover?

The details of critical illness insurance policies can vary significantly between providers. To find the best deals on life insurance with critical illness cover, compare policies from various UK insurance providers. Platforms like MoneySuperMarket offer a convenient way to compare policies, ensuring you get accurate pricing and can make an informed decision.

Author

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Rachel Ditchburn

Former Senior Commercial Manager

Rachel is a former Senior Commercial Manager at MoneySuperMarket, where she oversaw the Protection, Pet and Leisure Insurance channels. Outside of work, Rachel is a keen cook and enjoys live music,...

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Reviewer

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Katie Bishop

Insurance writer

Katie Bishop is an author and journalist with a decade of writing and editing experience. She has previously worked as an economics editor at Oxford University Press, and her business and finance...

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Data based on the minimum price of life insurance sold through MoneySuperMarket for life insurance and critical illness cover for October 2025-December 2025. Prices vary based on your personal details & circumstances.

Data based on the average price of life insurance sold through MoneySuperMarket for life insurance and critical illness cover for October 2025-December 2025.

Data based on the median price of life insurance sold through MoneySuperMarket for life insurance only for October 2025-December 2025.