Guide · 14 min read

Can I Get Private Health Insurance if I Have a Pre-Existing Condition?

Yes. Having a pre-existing condition does not normally stop you buying private health insurance in the UK. The important question is whether that condition itself will be covered. On a new individual policy it is often excluded at first, while moratorium, continued underwriting or an eligible employer scheme can produce a different outcome.

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Written by Patrick Baxter, Founder & Health Insurance Broker
Fact-checked by Sadie Sansford, Business Development Director
Updated September 2026
14 min read

What This Guide Covers

What counts as a pre-existing condition
Moratorium vs full medical underwriting
Switching insurer and continued underwriting
Acute, chronic and undiagnosed symptoms
Employer schemes and medical history disregarded
Bupa and other common pre-existing-condition questions
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You Can Still Buy Cover

Medical history does not automatically stop you taking out private health insurance.

Cover Is the Key Question

An existing condition may be excluded, deferred under a moratorium or treated differently when you switch.

Symptoms Can Count

A condition can be treated as pre-existing even if it had not been formally diagnosed before the policy started.

Do Not Switch Blindly

If you already have cover, confirm the new insurer's underwriting terms before cancelling your existing policy.

Quick AnswerWhat Counts?UnderwritingAcute & ChronicHow It WorksNew vs SwitchingCompare CoverFAQs
The Short Answer

Can you get health insurance with a pre-existing condition?

Yes. In most cases you can still take out private medical insurance even if you have an existing medical condition. A new policy can still cover eligible new conditions that arise after your cover begins.

What you should not assume is that the condition you already have will be covered immediately. Private medical insurance is mainly designed for new, acute illnesses and injuries. Existing symptoms or conditions are assessed under the insurer's underwriting rules.

There are important differences between buying a new individual policy, switching from an existing policy and joining an employer scheme. If you already have cover for a condition, switching insurer without checking the underwriting basis can mean losing that cover.

The practical rule

Compare the underwriting outcome as carefully as the premium. A cheaper policy can be poor value if it adds an exclusion for something your current policy already covers.

Underwriting Options

How insurers decide what is covered

For a brand-new individual policy, the two most common approaches are full medical underwriting and moratorium underwriting. If you already have health insurance, continued underwriting can be more important because it may preserve some of your existing medical terms.

Full Medical Underwriting

You answer medical questions when you apply. The insurer assesses the information and tells you which personal medical exclusions, if any, will apply before the policy begins.

Moratorium Underwriting

You usually do not complete a full medical declaration at the start. Instead, the insurer checks relevant history when you claim. An eligible pre-existing condition may regain cover only if the insurer's moratorium rules are met.

Continued Underwriting

If you are switching from another insurer, the new provider may agree to continue your existing underwriting basis, such as continued personal medical exclusions or a continued moratorium. This is subject to acceptance.

Medical History Disregarded

This is most commonly available on eligible company schemes. Personal medical exclusions are generally not applied based on past medical history, but exact terms depend on the scheme and insurer. Normal benefit limits, exclusions and chronic-condition rules still apply.

Pre-Existing Conditions

What counts as a pre-existing condition?

The exact definition comes from the policy wording, but insurers generally look at medical problems that existed before cover began or within a stated look-back period. Crucially, this is not limited to conditions that already had a formal diagnosis.

Symptoms, medication, GP or specialist advice, diagnostic tests and treatment can all be relevant. For example, if you had recurring knee pain before taking out a policy and only received the diagnosis afterwards, the insurer may still treat the knee problem as pre-existing.

Medical history that may be relevant

Diagnosed conditions: for example arthritis, hypertension or asthma.

Symptoms under investigation: such as chest pain, back pain or numbness before the policy began.

Previous treatment: including operations, physiotherapy, counselling, scans, medication or specialist referrals.

Stable ongoing conditions: even where symptoms are controlled, regular medication or monitoring can still be relevant.

Different insurers and underwriting methods can reach different outcomes, so medical history should be assessed in the context of the policy you are considering.

Condition Types

Pre-existing is not the same as chronic

Acute Conditions

Private medical insurance generally focuses on acute conditions: illnesses or injuries where treatment is intended to resolve or materially improve the problem. If an acute condition is new and otherwise falls within the policy, it may be eligible for cover.

Chronic Conditions

Long-term conditions that need ongoing monitoring, medication or management are commonly excluded from routine private medical insurance. Some policies can still cover eligible acute complications or flare-ups, but this depends on the insurer and wording.

Why the distinction matters

A condition can be both pre-existing and chronic, but the two concepts are different. Underwriting deals with your medical history when cover starts; chronic-condition rules deal with the type and duration of treatment the policy is designed to fund.

Underwriting Explained

What the main underwriting methods mean in practice

Full Medical Underwriting

You disclose the medical information the insurer asks for before cover starts. The insurer can accept the application and apply personal exclusions based on the disclosed history. The benefit is that you know those personal terms at the outset.

Answer the questions accurately and completely. A symptom can be relevant even if you did not yet have a diagnosis.

Moratorium Underwriting

A moratorium normally avoids a full health questionnaire at application, but it does not mean pre-existing conditions are automatically covered. The insurer assesses relevant history when you claim.

Many UK policies use a five-year look-back and require two continuous years without specified symptoms, medication, treatment, tests or advice before an eligible condition can regain cover. That is a common pattern, not a universal rule.

Continued Underwriting When You Switch

If you are already insured, the new provider may offer continued personal medical exclusions (often called CPME or CME) or a continued moratorium basis. The aim is to carry forward the existing underwriting position rather than treating you as a completely new customer.

Acceptance is not automatic. Always obtain the new insurer's written underwriting outcome before cancelling your current policy.

Medical History Disregarded

MHD is generally associated with qualifying employer schemes. Personal medical exclusions are generally not applied based on past medical history, which can allow treatment for pre-existing conditions where the scheme otherwise covers it. Exact terms and any qualifying questions depend on the scheme and insurer.

It is not a promise that every condition or treatment is covered. The scheme's normal exclusions, limits and chronic-condition rules still apply.

Your Situation

New policy, switching insurer or company cover?

If you are buying health insurance for the first time

Expect the insurer to apply either full medical underwriting or a moratorium. Your pre-existing condition may be excluded, but you can still have valuable cover for eligible new medical problems.

If you already have private health insurance

If your current insurer already covers a condition, moving to a cheaper policy under fresh underwriting could create a new exclusion. Ask whether the new provider can offer continued underwriting before deciding to switch.

If you are leaving a company scheme

Do not assume the same cover continues automatically when you move from employer-funded insurance to an individual plan. Some insurers offer continuation options, but timing, prior cover and underwriting rules matter. See our guide to continuing health insurance after leaving a company.

If your employer offers medical history disregarded cover

MHD can be particularly valuable if you have existing medical history because personal medical exclusions may not be applied. Check the scheme benefits and standard exclusions before assuming a particular treatment is covered.

Protect Existing Cover

Do not give up cover for a medical condition until the new insurer's terms are confirmed.

Check Symptoms

Undiagnosed symptoms, advice, medication and tests can all matter to underwriting.

Compare More Than Price

Hospital access, outpatient benefits, exclusions and underwriting can matter more than a small premium saving.

Already have medical history? We can compare both the price and the underwriting outcome.

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Compare Cover

How to compare health insurance with medical history

Start with your current situation, not just a quote form. The right approach is different for somebody buying their first policy and somebody who already has valuable cover they want to preserve.

01

Map Your History

Note current conditions, recent symptoms, investigations, medication and any treatment that is ongoing.

02

Confirm Your Current Basis

If you are already insured, identify your existing exclusions or moratorium basis before comparing alternatives.

03

Compare Underwriting

Ask what each insurer would exclude, continue or potentially allow to regain cover under its rules.

04

Then Compare Benefits

Review hospital lists, outpatient limits, cancer cover, therapies, excess and premium alongside the underwriting.

Do I have to disclose my medical history?

With full medical underwriting, answer the insurer's health questions accurately and completely. With moratorium underwriting, you may not provide a full history when you apply, but the insurer can investigate relevant medical history when you claim.

Can a broker improve the underwriting outcome?

A broker cannot guarantee that an insurer will cover a condition, but they can identify the underwriting routes available, compare how insurers may treat your circumstances and help you avoid switching onto terms that are worse than the cover you already hold.

Frequently Asked Questions

Health Insurance and Pre-Existing Conditions

A new individual private medical insurance policy will not usually cover a condition immediately if it is classed as pre-existing. The position depends on the underwriting method, insurer and policy terms. Moratorium underwriting can sometimes allow an eligible condition to become covered after the required trouble-free period, while continued underwriting may preserve some existing cover when switching insurer.

Bupa's standard individual health insurance is underwritten. With full medical underwriting, existing conditions may be excluded after Bupa reviews the medical history. Under moratorium underwriting, a pre-existing issue may become eligible for cover if it meets Bupa's moratorium rules, subject to the policy terms. If you already have insurance, do not assume your existing cover will transfer automatically when you switch.

Yes. Insurers can take account of symptoms, medication, advice, tests or treatment before the policy started even where there was no formal diagnosis at the time.

You normally do not complete a full medical declaration at the outset. Instead, the insurer checks relevant medical history if you claim. Many UK plans use a look-back period and a continuous trouble-free period before an eligible pre-existing condition can regain cover. A five-year look-back and two-year trouble-free period is common, but the definition and timing vary by insurer.

Sometimes. A new insurer may be willing to offer continued personal medical exclusions or continued moratorium terms based on your existing policy. This is subject to acceptance and eligibility. Do not cancel the existing policy until the new insurer has confirmed the underwriting terms in writing.

Some employer schemes use medical history disregarded underwriting. That can mean personal medical exclusions are not applied for pre-existing conditions. However, the scheme's normal benefits, limits and exclusions still apply, including any restrictions on chronic conditions.

There is no single answer based only on the name of the condition. The insurer will consider the underwriting basis and the relevant medical history. If you already have cover for a serious condition, protecting that existing position can be more important than finding the lowest new premium.

Immediate cover is uncommon on a brand-new individually underwritten policy. It can be possible under some employer schemes using medical history disregarded underwriting, or where a new insurer accepts continued underwriting from an existing policy.

Compare both the benefits and the underwriting outcome. The cheapest policy is not necessarily the best option if it introduces a new exclusion or loses cover you already have.

Still unsure how an insurer may treat your medical history?

Call 0203 859 1822
How This Site Works

This site is run by My Health Protected, an FCA-authorised independent health insurance broker. We compare UK private medical insurance and review our guides against current insurer information.

For this September 2026 update, we checked current underwriting guidance published by Bupa, Aviva, AXA Health and Vitality. Insurer definitions and eligibility can differ, so your own policy wording and underwriting decision always take priority.

If you would like a quote or a second opinion on a policy you already hold, contact us. Our advice is free and without obligation.

Disclaimer

The information on this page is general guidance, not a guarantee of cover. Underwriting decisions and policy benefits vary between insurers and individual circumstances. Check the insurer's current documents and your personal terms before buying, cancelling or switching a policy.

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Further Reading
Related Health Insurance Guides

Continue your research with these guides from our health insurance guides library.

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Patrick Baxter, Managing Director and Founder of My Health Protected
About the Author

Patrick Baxter

Patrick Baxter is the founder of My Health Protected, an FCA-authorised independent health insurance broker based in London. LinkedIn →

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