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You can still get cover if you have a pre-existing condition. It's usually excluded when your policy starts, and depending on your underwriting it may be covered later.
UK private medical insurance normally excludes pre-existing conditions when your policy starts, but having one doesn't usually stop you getting cover for new, eligible conditions. Underwriting decides what's excluded:
Chronic conditions, such as diabetes or asthma, usually aren't covered. A few providers cover named conditions, such as well-controlled high blood pressure, sometimes at extra cost. A condition doesn't automatically raise your premium, though some insurers price in health history.
Sources: Bupa, Aviva, AXA Health, Vitality, Saga, Freedom Health Insurance, The Exeter, and General & Medical guides (checked October 2026)
When you're weighing up pre-existing conditions and health insurance together, it helps to start with a clear definition. A pre-existing condition is any medical issue you've had symptoms of, received treatment for, or sought medical advice about before your health insurance policy begins. This definition is broader than many people expect.
If it's on your medical record, insurers take it into account when assessing your cover. This includes:
You need to disclose anything in your medical history when asked, even conditions you consider minor or fully resolved. Failing to disclose can lead to rejected claims later.
If you're unsure whether something counts as a pre-existing condition, mention it anyway. Insurers would rather have complete information upfront than discover a gap when you need to claim.
Private health insurance is designed to cover new, unexpected medical conditions that arise after your policy starts. It's a safety net for the unknown, not a way to fund treatment for conditions you already have.
If insurers covered all pre-existing conditions from day one, they'd effectively be paying for medical problems that are already known to exist. This would push premiums up for everyone. By excluding pre-existing conditions initially, insurers can keep cover affordable while still providing valuable protection for future health issues.
This is fundamentally different from the NHS, which treats everyone regardless of medical history. Private health insurance complements NHS care rather than replacing it. You can continue using the NHS for pre-existing conditions while using private cover for new problems.
When you apply for health insurance, you'll choose how insurers assess your medical history. This is called underwriting, and it's one of the most important decisions you'll make when setting up a policy. The two main options are moratorium underwriting and full medical underwriting (FMU).
With moratorium underwriting, you don't provide your full medical history upfront. The insurer only looks at your medical records if and when you make a claim.
Pros: a quick, simple application, historic conditions from more than five years ago are usually covered from the start, unless they're chronic, and exclusions may lift after two symptom-free years.
Cons: you won't know exactly what's covered until you claim, claims can take longer while your medical history is reviewed, and minor issues from the past five years are automatically excluded.
Example: if you had mild asthma treated three years ago, it's excluded at the start under moratorium underwriting. If you have no symptoms, medication, or treatment for two years on cover, the exclusion may lift automatically.
With full medical underwriting, you provide a complete medical history when you apply. The insurer then confirms in writing which conditions will be covered or excluded.
Pros: complete clarity about your cover before you start paying, a faster claims process since your history is already assessed, and minor conditions are assessed individually rather than automatically excluded.
Cons: a longer, more detailed application process, exclusions tend to be permanent even if you go years without symptoms, and you may need to provide GP reports, which can take time.
Example: if you had surgery for gallstones a few years ago but have had no further issues, the insurer may decide to permanently exclude gallstones under full medical underwriting but cover other eligible conditions straight away, so you know this before your policy starts.
Your choice depends on your medical history and what matters most to you.
Moratorium underwriting can suit you if: you've had minor issues in the past five years but nothing serious, you've recovered from a more serious condition and expect to remain symptom-free, or you want a quick, simple application.
Full medical underwriting can suit you if: you have a complex medical history, you want complete certainty about your cover, or you'd rather know exclusions upfront than discover them when claiming.
If your condition has been stable for a while, full medical underwriting often gives you a clearer picture than moratorium. Knowing your exclusions on day one means fewer surprises if you ever need to claim.
Not sure which underwriting method suits you?
An advisor can talk through your medical history and explain which approach is likely to work best for your circumstances.
If you already have health insurance, moving to a new insurer doesn't have to mean starting again. Many insurers let you switch on continued underwriting, which carries your current terms across. If you join on new terms instead, anything you've had symptoms, treatment or advice for while on your current policy can count as pre-existing with the new insurer. Our guide to switching health insurance providers covers the wider process.
This option is for people whose current policy uses moratorium underwriting. Your moratorium runs from the date your existing cover started, not the date you join the new insurer, so the clock doesn't restart. A condition can still become covered once you've had two clear years on cover without symptoms, treatment, medication or advice for it. You'll usually need to show your current certificate of insurance and answer some short health questions, mainly about recent or planned treatment. The new insurer may add exclusions.
This option is for people whose current policy uses full medical underwriting. Instead of assessing your history from scratch, the new insurer carries over the personal exclusions shown on your current policy. A condition that isn't excluded now can stay covered, as long as the new plan covers it. As with continued moratorium, expect to provide your certificate and answer some short health questions. The new insurer may add exclusions, and may word the existing ones differently.
If you're covered through work and you leave, retire or are made redundant, your cover usually stops when you leave the scheme. Many insurers will let you move to a personal policy on continued terms, so conditions covered on the company scheme may stay covered, subject to the new plan. Family members on the scheme can usually do the same. There's normally a time limit. AXA Health, for example, gives you 120 days after leaving its company scheme. If you apply later, conditions you were claiming for are normally excluded. Ask about your options as soon as you know your leaving date, and check what the personal plan covers, as its terms differ from a company scheme's.
Medical history disregarded (MHD) is underwriting that's usually only offered on company and group schemes, not personal policies. The insurer doesn't take your past health into account, so eligible pre-existing conditions can be covered, within the plan's terms and benefit limits. It usually applies to family members on the scheme too. Some insurers only offer MHD on larger schemes. If you're on an MHD scheme and plan to leave, ask the insurer how your conditions would be treated on a personal policy, and how long you have to apply.
Sources: AXA Health, Aviva, Bupa, The Exeter and WPA guides on underwriting, switching and company schemes (checked October 2026)
Understanding the difference between chronic and acute conditions matters because it affects what private health insurance will ever cover, not just what's excluded at the start.
An acute condition is a disease, illness, or injury that comes on suddenly and is likely to respond to treatment, leading to full recovery. Private health insurance is designed for acute conditions.
Examples include appendicitis, broken bones, a new cancer diagnosis, cataracts, hernias, joint replacements, and heart attacks. Even if an acute condition is serious, insurers will typically cover treatment because there's a defined endpoint: you receive treatment, you recover, and your health returns to how it was before.
A chronic condition is an illness that can't be cured but can usually be managed with ongoing treatment. Private health insurance doesn't typically cover chronic conditions because they require continuous, long-term management rather than short-term treatment.
Examples include diabetes, asthma, arthritis, high blood pressure, COPD, Crohn's disease, and multiple sclerosis. If you have a chronic condition, the NHS is generally better equipped to provide the ongoing, long-term care you need, and private insurance works alongside NHS care rather than replacing it.
Some policies may cover acute flare-ups of a chronic condition. For example, if you have asthma and need hospital treatment during a severe attack, your policy might cover that emergency stay, depending on the insurer and policy wording.
The ongoing management of your chronic condition, such as regular check-ups, routine medication, and preventive care, won't be covered.
Being completely honest about your medical history is essential. If you fail to disclose a condition, whether intentionally or by accident, the consequences can be serious.
If you make a claim and the insurer discovers you didn't disclose relevant information, they can:
It's always better to include more information than less. If you're unsure whether something is relevant, mention it. Insurers would rather have complete information than discover gaps later.
Disclosing a condition mainly affects what's covered. It doesn't automatically raise your premium, though some insurers do take your health history into account when setting the price. The Association of British Insurers sets out standards for how insurers should communicate with customers about medical disclosure, and its website has further guidance if you want to understand your rights.
If your insurer refuses a claim and you've complained to it first, you can take the complaint to the free Financial Ombudsman Service once you have its final response, or if eight weeks pass without one.
Application process
Gather your medical information
Note the names of any conditions you have or have had, when you were diagnosed, what treatment or medication you've received, when you last had symptoms or treatment, and your GP's contact details.
Decide on your underwriting method
Think about whether moratorium or full medical underwriting suits you better, based on how recent your conditions are, how serious they are, and whether you prefer certainty or flexibility.
Compare quotes
Get quotes from multiple insurers. An advisor can search across providers, explain which are most flexible for your conditions, and help you understand exclusions and policy terms.
Complete your application honestly
Be thorough when answering medical questions. Include everything, even if you think it's minor, and keep copies of what you've declared.
Review your policy documents
Once approved, check your list of personal medical exclusions, what's covered and what's not, and how to make a claim.
Your health insurance won't necessarily cost more because of a pre-existing condition. Price mainly depends on your age, where you live, your lifestyle, and the cover and excess you choose. Some insurers also take your health history into account, and some providers charge extra to cover a named pre-existing condition.
Speak to an advisor for current pricing.
While all insurers handle pre-existing conditions similarly in principle, some are known for being more accommodating than others.
The Exeter is widely regarded as one of the more flexible insurers when it comes to pre-existing conditions. Health+ offers standard moratorium, continued moratorium, full medical underwriting, and continued personal medical exclusions. Under its standard moratorium, a condition from the five years before you join can be covered once you've had a clear two-year period on the policy without symptoms, medication, treatment, or advice for it. The Exeter is a mutual company, owned by its members, so profits are reinvested to benefit policyholders rather than shareholders.
Freedom Health Insurance is often overlooked but worth considering if you've struggled to get cover elsewhere. They take a more personalised approach to underwriting, are more willing to consider complex medical histories, and offer straightforward policies. If you've been turned down by mainstream insurers, Freedom may be able to help.
Bupa is one of the UK's largest health insurers. While they handle pre-existing conditions similarly to other insurers, their Direct Access feature lets you go straight to a specialist for cancer, mental health, or musculoskeletal concerns without waiting for a GP referral. They also offer comprehensive cancer cover and one of the largest hospital networks in the UK.
Vitality takes a different approach by rewarding healthy behaviours. Their programme offers discounts on gym memberships, fitness gear, and healthy food, alongside premium reductions for meeting activity targets. If you're committed to managing your health proactively, Vitality's rewards can offset the cost of insurance. If you don't engage with the programme, it may not offer the same value.
WPA consistently receives high customer satisfaction ratings and is known for flexible policy configuration and a no-claims discount that isn't affected by smaller claims. Like Bupa and The Exeter, it has no shareholders and calls itself a not-for-profit insurer.
Both Aviva and AXA offer competitive health insurance with standard handling of pre-existing conditions. Aviva's 'BacktoBetter' service supports muscle, bone, and joint pain, alongside family-friendly options. AXA typically applies a shorter, three-year lookback for moratorium underwriting, along with good digital tools and competitive pricing for younger applicants.
Diabetes is one of the most common pre-existing conditions. As a chronic condition, its ongoing management won't be covered by private health insurance. However, new, eligible conditions that aren't related to your diabetes are covered, and acute complications may be covered depending on your policy. Ask your insurer whether complications of your diabetes would be treated as related or separate conditions.
Asthma is classed as both a chronic condition and, if you've been treated recently, a pre-existing condition. Ongoing asthma management won't be covered, but emergency hospital stays during severe attacks may be, and new, unrelated respiratory conditions may be covered. If you've been symptom-free for two years under moratorium underwriting, the exclusion may lift. Ask what counts as an asthma-related condition and whether acute flare-ups are covered.
Mental health conditions like depression, anxiety, and bipolar disorder are treated like any other pre-existing condition. If you've had treatment in the past five years, the condition will likely be excluded initially, though it may become covered after two symptom-free years under moratorium underwriting. New, unrelated mental health conditions may be covered, and many insurers now offer good mental health support as standard.
If you've had cancer in the past, underwriting will depend on how long ago you were treated, whether you're currently in remission, and the type of cancer. New, unrelated cancers will typically be covered. The original cancer may be excluded permanently, but this varies by insurer and circumstances. Ask whether a recurrence of your specific cancer is excluded and how new, unrelated cancers would be treated.
Cardiovascular issues like high blood pressure, high cholesterol, or a previous heart attack are common pre-existing conditions. Their ongoing management won't be covered, but new, unrelated conditions will be, and diagnostic tests for new symptoms are usually covered too. Ask your insurer how they distinguish between related and unrelated cardiac conditions.
Back pain, joint problems, and previous injuries are frequently declared as pre-existing conditions. With moratorium underwriting, these are excluded if you've sought treatment in the past five years, though the exclusion may lift after two symptom-free years. Related areas of the body may also be excluded, not just the specific joint or area, so ask whether a related area would be excluded too.
If you're declined for health insurance, or offered more exclusions than you expected, there are still options.
For general guidance on insurance products and your rights as a consumer, MoneyHelper offers free, independent information.
Why it's still worth it
Common questions
Yes, you can usually get a policy with a pre-existing condition, though that condition is likely to be excluded at first. You're still covered for new, eligible conditions that start after your policy begins.
Not automatically. A pre-existing condition usually affects what's covered rather than what you pay, and price is mainly based on things like your age, where you live, your lifestyle, and your cover level. But some insurers take your health history into account when pricing, and some providers charge extra to cover a named pre-existing condition.
If you go two continuous years from your policy start date without symptoms, treatment, medication, or advice for a pre-existing condition, it may become eligible for cover. This isn't guaranteed for every condition and varies by insurer, but it's a genuine possibility with moratorium underwriting.
Ongoing management of chronic conditions isn't covered by private health insurance. Chronic conditions like diabetes, asthma, and arthritis require continuous treatment that health insurance isn't designed for. However, acute flare-ups or complications may be covered depending on your policy, and the NHS remains available for chronic condition management.
It depends on your medical history. Moratorium can suit you if you've had minor issues recently but expect to remain symptom-free, or if you've recovered from something serious and want the chance of cover after two years. Full medical underwriting can suit you if you want certainty about exclusions from day one, or if you have a complex history and want conditions assessed individually.
There's no single best insurer. Most exclude pre-existing conditions at first and the rules for covering them later vary, so compare underwriting terms as well as price. A few providers will cover named conditions, such as well-controlled high blood pressure, sometimes for an extra premium.
Having a pre-existing condition doesn't usually stop a UK health insurer accepting you. If you choose moratorium underwriting, you don't have to list past conditions when you sign up. What differs is how the condition itself is treated. An insurer that accepts you will usually exclude it at first: for at least two years under moratorium underwriting, or as a named exclusion under full medical underwriting. Some insurers will agree to cover certain conditions, so compare underwriting terms as well as price. The insurers worth considering section above explains how some providers approach pre-existing conditions.
It depends on the underwriting method. With moratorium, you typically only need to consider the last five years. Conditions before that are usually covered from the start, unless they're chronic. With full medical underwriting, you disclose your entire medical history, and serious conditions from any time may be excluded.
Yes, it can. Insurers usually count symptoms, tests, treatment or advice you had before your policy started, even without a diagnosis. That means an undiagnosed condition can still be treated as pre-existing. For example, if you had symptoms before joining and are diagnosed a few months later, the condition may be excluded. If you're asked about your health when you apply, include symptoms as well as diagnosed conditions.
Always try to be thorough. If you genuinely forget something and later realise, contact your insurer immediately to update your records. Failing to disclose can lead to rejected claims or cancelled policies. When in doubt, disclose it.
Usually not. If your pre-existing condition is excluded, related conditions and complications are typically excluded too, though some insurers may cover certain complications. Always check your policy wording carefully and ask your insurer if you're unsure.
Often, yes. Even with several exclusions, you're still covered for new, eligible conditions that start after your policy begins, which could include cancer, heart treatment, and joint replacements, depending on your cover. You also get faster access to private healthcare and choice of consultant.
When you claim, insurers may request your medical records from your GP or other healthcare providers to verify whether a condition is pre-existing. With full medical underwriting, they may also request records during the application process. Under moratorium underwriting, this is how insurance companies determine whether a claim is for a new condition or one you had before joining.
Yes, but be careful. If you switch insurers, your pre-existing conditions may be excluded again under the new policy. Any cover you've built up for those conditions may be lost. Always check the terms before switching, or look for continued underwriting options that preserve existing cover.
Private health insurance covers the cost of private medical treatment, hospital stays, and consultations. Health cash plans reimburse fixed amounts for routine healthcare costs like dental check-ups, optical tests, and physiotherapy. Health cash plans are cheaper but don't cover major medical treatment or hospital care.
Yes. Private health insurance doesn't replace the NHS. You'll continue to use the NHS for chronic condition management, A&E visits, GP appointments, and anything your policy doesn't cover.
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