Critical illness survival period: how long you must live after diagnosis

A critical illness policy does not pay the moment you are diagnosed. It pays once you have survived a set number of days after that diagnosis. This is the survival period, and on most policies it is 14 days from diagnosis, though the range across insurers runs from 10 days to 30 days depending on the product¹.

The clock starts when you first meet the criteria for the condition, not when you tell the insurer. The policy conditions say the benefit becomes payable if you are diagnosed with a critical illness and do not die within 14 days following that diagnosis³. If you die inside that window, the critical illness claim does not pay, and what happens next depends on whether the policy also carries life cover.

The survival period is not the same as a waiting period. Some insurers state plainly that there are no qualifying periods or waiting periods, so you can claim as soon as the policy has been underwritten and is active⁵. The survival period is a separate condition attached to the diagnosis itself.

The survival period: usually 14 days from diagnosis

Most critical illness policies have a survival period after diagnosis, usually 10 to 14 days depending on the product¹. The 14-day version is the common one. Legal & General's critical illness cover pays if you survive for 14 days from diagnosis², and Royal London's policy conditions use the same wording: the benefit becomes payable if you are diagnosed with a critical illness and do not die within 14 days following that diagnosis³.

Not every insurer uses 14. Aviva's Critical Illness Plan asks that you survive 10 days after you are diagnosed⁷, and its glossary describes a plan that pays if you are diagnosed with a specific illness defined by the policy and survive 10 days¹⁰. Aegon's personal protection policy conditions use at least 10 days after first meeting the criteria for a critical illness¹². At the other end, Post Office critical illness cover requires you to survive for 30 days after your diagnosis to be able to claim⁸, and its guide on life insurance and cancer repeats the same 30-day rule¹³.

The range in the market runs from 10 days to 30 days¹.

Children's cover follows its own version of the rule. Aviva's children's critical illness benefit pays provided the child survives for at least 10 days¹, while Legal & General's children's critical illness cover asks for 14 days after the date of diagnosis⁹. Cirencester Friendly's children's critical illness support requires the child to survive for a period of 14 days after diagnosis of one of the listed critical illnesses¹⁴.

What happens if you die within the survival period

If you die before the survival period has run, the critical illness benefit is not payable. The policy conditions are written so that the benefit becomes payable only if you do not die within the 14 days following diagnosis³. Dying inside the window means the critical illness claim fails.

What happens instead depends on the policy. Where critical illness cover is bundled with life insurance, a critical illness payout reduces the amount that could later be paid out if you die within the term⁵. The two benefits are not usually paid in full on top of each other. On a single life policy, cover ends on death; on a joint policy, when the first person dies the survivor may be able to continue the critical illness cover after the first valid claim¹⁵.

Post Office sets out the interaction for its own cover: after the 30-day survival period you are entitled to both payouts if you die within your policy term⁸. That is a specific feature of that policy, not a general rule, and it shows why the survival period matters beyond the initial claim.

Critical illness and serious illness cover: how the survival period applies to each

Serious illness cover works in the same way on this point. Vitality's serious illness cover states that you will need to survive 14 days after your diagnosis to receive your payout¹⁶. The survival rule is a standard feature of both product names, even though the conditions covered and the definitions used differ between them.

The conditions themselves are broad. Critical illness cover normally includes a number of serious illnesses and includes heart attacks, strokes and certain types of cancer¹⁷, and it can also cover your children¹⁸. Cover depends on the conditions listed in the policy and on individual underwriting outcomes, and policies vary by insurer¹⁹.

Term lengths vary too, which matters because the survival period only applies to a claim made during the policy term. Critical illness cover can run for terms of 5 to 50 years², with a minimum term of two years on some plans¹⁰ and a maximum of 50 years²¹. Royal London's personal protection menu sets the term of cover at 1 to 72 years across life cover, critical illness cover and combined cover²². Nationwide's critical illness cover can protect you until your 75th birthday¹⁸.

One detail worth knowing: TSB's policy booklet says the 14-day survival requirement applies even if the 14 days falls after the policy end date²³. A diagnosis just before the policy expires can still lead to a payout if you survive the period.

Is the survival period the same as a waiting period?

No, and the two are often confused. A survival period runs from your diagnosis and asks how long you live afterwards. A waiting period, where one exists, runs from the start of the policy and asks how soon you can claim at all.

Some insurers state that there are no qualifying periods or waiting periods, so you can make a claim as soon as the policy has been underwritten and is active, and you can typically contact the insurer at any time even if you have recovered⁵. That does not remove the survival period. It means there is no separate delay at the front end of the policy.

The distinction matters when you are reading your own conditions. If you see a reference to a waiting period, check whether it is about the start of the policy or about the diagnosis. The survival wording is usually phrased as surviving a set number of days after diagnosis, or not dying within a set number of days following diagnosis³.

Does the 14 days start from diagnosis or from when I claim?

From diagnosis. The policy conditions say the benefit becomes payable if you are diagnosed as suffering from a critical illness and do not die within 14 days following such diagnosis³. The trigger is the diagnosis date, or the date you first meet the criteria for the condition, not the date you contact the insurer.

That has a practical consequence. If you delay telling the insurer, you do not extend the survival period, and if you tell them immediately you do not shorten it. The 14 days runs from the medical event.

You can still make contact during the survival period. Some policies let you contact the insurer at any time, even if you have recovered⁵. Processing a claim can take months, so the survival period is rarely the thing that holds up payment⁵. The delay in practice comes from the claim process itself, not from the survival rule.

Checking the survival period in your own policy

The survival period is written into the policy conditions or policy booklet, usually in the section that defines when a critical illness benefit becomes payable. Look for wording about surviving a set number of days after diagnosis, or about not dying within a set number of days following diagnosis³.

If you cannot find it, ask the insurer or the adviser who arranged the policy to point you to the exact clause. The figure is not always on the summary page, and it can sit in the definitions rather than the main benefits section.

Two things are worth checking at the same time. First, whether your policy is standalone critical illness cover or bundled with life insurance, because that changes what happens if you die inside the survival period⁵. Second, whether the policy has any waiting period at the start, separate from the survival rule⁵.

If you are comparing policies, the survival period is one of the conditions to line up side by side, along with the conditions covered and the term. Our guide to how critical illness cover works sets out the wider picture, and standalone or combined critical illness cover compared looks at how the two structures differ. If you are claiming, claiming on critical illness cover or income protection walks through the process.