Critical illness cover pays for operations only where the policy names them, because it pays when you meet one of its listed definitions. A handful of those definitions are written around a particular operation, such as heart bypass surgery, heart valve surgery or aorta graft surgery. Having an operation is not, on its own, what triggers a claim.

Which operations count, and how closely each is defined, varies by insurer, so an FCA-authorised broker can walk you through the wording of the policies they work with if surgery is planned or behind you; ask for the call-back via the form on this page.

Which operations does a critical illness policy list?

Legal & General's policy terms (QGI14872) say it pays if the life insured "is diagnosed with an illness or undergoes a medical procedure as defined" in its list of definitions and survives for 14 days from diagnosis. Its plain-English guide (QGI14860) has several entries built around an operation, among them these five:

EntryWhat the wording asks forWhat it leaves out
Coronary artery by-pass graftsSurgery to divide the breastbone (median sternotomy) or thoracotomy, on a consultant cardiologist's advice, to correct narrowing or blockage of one or more coronary arteries with by-pass graftsAny other surgical procedure or treatment
Heart valve replacement or repairSurgery on a consultant cardiologist's advice to replace or repair one or more heart valvesNothing is listed as not covered
Aorta graft surgerySurgery to the aorta that removes and replaces a portion of it with a graft; the thoracic and abdominal aorta count, its branches do notOther procedures, such as stents or endovascular repair
Open heart surgerySurgery requiring median sternotomy, on a consultant cardiologist's advice, to correct any structural abnormality of the heartOther procedures, such as balloon angioplasty or inserting stents
Benign brain tumourA non-malignant tumour or cyst in the brain, cranial nerves or meninges that leads to surgical removal, or to lasting neurological deficit with symptomsTumours in the pituitary gland or originating from bone tissue; angioma and cholesteatoma

The brain tumour entry goes further than the ABI model, which asks for permanent neurological symptoms. Legal & General's guide says its definition "covers surgical removal of a tumour (whether permanent neurological symptoms persist or not)". Brain tumours have their own page, and an organ transplant is covered on the kidney disease page.

Does the technique used change whether a policy pays?

It can decide the claim. On the bypass entry, Legal & General's guide says: "This definition doesn’t cover keyhole surgery or other surgical procedures to treat blocked arteries such as balloon angioplasty or insertion of stents." Aviva's Life Insurance+ conditions (AV1411600_AL50002_0226) set a similar limit on aorta graft surgery, where stents and endovascular repair are not covered. How a stent is treated after a heart attack is explained on the heart attack page.

The Association of British Insurers (ABI) model wording for bypass grafts asks for "surgery requiring median sternotomy (surgery to divide the breastbone)", where Legal & General's entry also accepts a thoracotomy. Its model for heart valves is tied to the same step, whereas Legal & General's valve entry above asks only for surgery to replace or repair a valve. The ABI guide (updated April 2023) adds that insurers "may incorporate some, all or none of the conditions" it sets out. The ABI minimum standards page explains the model wordings, and the conditions covered page has the wider list.

Can a policy pay while you are still waiting for the operation?

Some can. Aviva attaches the same sentence to many of its surgery entries, among them aorta graft surgery, coronary artery bypass graft, heart valve replacement or repair and structural heart surgery: "We will make an advance payment of the cover amount if you are placed on an NHS waiting list for this surgical treatment." Royal London's Personal Menu Plan (plan details, July 2025) words its bypass entry as "The undergoing of or inclusion on the NHS waiting list for, surgery on the advice of a consultant cardiologist".

Anyone already on a waiting list can leave their details on the form here, and a broker will ring back to check how the policies they work with handle that stage.

Do any operations lead to a smaller payment?

Several insurers add a second tier of conditions that pay a capped sum without using up the main cover. Each insurer's own limits:

  • Legal & General includes carcinoma in situ of the breast, "treated by surgery", and says it will pay the lower of 25% of the amount of cover or £25,000, without reducing the main cover or changing premiums.
  • Aviva pays the lower of £25,000 or 25% of the cover amount for "Less advanced cancer of the breast – with surgical removal" (the lower of £30,000 or the cover amount if its upgraded benefit is chosen), and says the policy continues after such a claim.
  • Aviva's optional upgraded critical illness benefit, which costs extra, pays the lower of £30,000 or the cover amount for entries including aortic aneurysm with endovascular repair, carotid artery stenosis with surgical repair and coronary angioplasty with specified treatment.
  • Royal London's Additional Conditions Cover pays whichever is lower of 50% of the cover amount or £35,000 for its additional conditions other than pregnancy complications, including aortic aneurysm with endovascular repair, and a claim leaves the main cover in place.

Grading by severity is on the severity-based cover page.

What about a knee, gallbladder or gynaecological operation?

The test is the definition, not the hospital stay. A knee replacement, gallbladder removal or endometriosis operation is not a reason for payment just because it is surgery; the illness behind it must meet a definition in the policy. Whether that is so in your own situation is something a broker can explain to you for free when they ring back.

Vitality shows how an operation-based benefit can look. Its Accident and Fracture Cover, a separate cover in its Personal Protection Plan provisions (VLTD174857WF_J3779_02/2025), pays a £1,000 lump sum for emergency surgery after admission through an Accident and Emergency department that needs more than 48 hours in hospital afterwards. It defines elective surgery as "Surgery that is not an emergency and can be scheduled in advance" and says it will not pay for it under that cover. Surgery for illnesses due to chronic or pre-existing conditions is ruled out too, and emergency surgery can be claimed once in a plan year.

Frequently asked questions

Does critical illness cover a hysterectomy?

Royal London lists "Carcinoma in situ of the cervix uteri - requiring trachelectomy (removal of the cervix) or hysterectomy" among its additional conditions, meaning a biopsy-confirmed diagnosis together with the undergoing of that surgery. Loop excision, laser surgery, conisation and cryosurgery are not covered. A hysterectomy for another reason is not what that entry describes.

Does critical illness cover pregnancy?

Which pregnancy complications a policy pays for is set out on the critical illness cover and pregnancy page. On the surgery side, Vitality's emergency surgery payment rules out "Anything related to pregnancy, labour and childbirth".

Does the policy end after a bypass or valve claim?

With Legal & General, a full claim on a standalone critical illness policy ends that policy, whereas an additional-cover payment does not. Other insurers set their own terms, so check yours.

Do I have to tell the insurer about an operation I have had?

Section 2 of the Consumer Insurance (Disclosure and Representations) Act 2012 says it is "the duty of the consumer to take reasonable care not to make a misrepresentation to the insurer", so answer questions about past surgery fully and accurately. The pages on disclosure requirements and pre-existing conditions explain what follows, and life insurance with medical conditions covers a declined application.

With an operation in your history, you can have the options talked through. A broker's call, which costs nothing, follows from the form on this page.

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