Private Health Insurance with Pre-Existing Conditions UK

What counts as a pre-existing condition

A pre-existing condition is broadly any condition, illness or injury for which the applicant has had symptoms, treatment, medication, tests, diagnosis or medical advice before the policy started. It does not have to be formally diagnosed: symptoms that prompted a GP visit, or investigations that did not yet have a result, can still count. This wide definition is why honest, careful answers at application matter so much.

Having a pre-existing condition rarely stops someone obtaining private medical insurance altogether. Insurers will usually offer cover, but the condition itself, and sometimes related conditions, will normally be excluded at the start. The product still covers new, unrelated acute conditions that arise after the policy begins.

The way the pre-existing condition is handled depends entirely on the underwriting basis chosen when the policy is taken out, so understanding the two main routes is the foundation of getting cover that works.

Full medical underwriting versus moratorium

Under full medical underwriting, the applicant declares their medical history when applying, and the insurer assesses it and confirms in writing which conditions are excluded. The advantage is certainty: the policyholder knows from day one exactly what is and is not covered, which is valuable for anyone with a significant history who wants no ambiguity at claim time.

Under moratorium underwriting, no medical history is declared at the start. Instead the policy excludes any condition for which the applicant had symptoms, treatment or advice in a defined look-back period, commonly the five years before joining. The advantage is a quicker, simpler application; the disadvantage is uncertainty, because whether an old condition is covered may only be resolved when a claim is made and the insurer checks the medical records.

Neither route covers a genuine pre-existing condition immediately. The choice is between certainty up front (full underwriting) and a faster application with the possibility of future cover (moratorium).

The moratorium clock and how cover can return

The moratorium route has a built-in mechanism for a pre-existing condition to become claimable. Typically, if the policyholder goes a continuous period of two years without symptoms, treatment, medication or medical advice for that condition while insured, it can move into cover. The exact period and conditions are set in the policy wording.

This means a condition that was active before the policy began, but then settles and needs no attention for the required period, can later become claimable. Conversely, a condition that recurs or needs treatment during the period resets or pauses the clock. The mechanism rewards conditions that genuinely resolve and stay resolved.

Because the clock depends on the medical record, keeping a clear picture of GP and specialist contact for the relevant condition helps establish when the symptom-free period has been met. Anyone relying on a moratorium should check the precise wording of their policy's two-year rule, as the detail varies.

The disclosure duty that protects your claims

Whichever underwriting route applies, the legal duty on the consumer is set by the Consumer Insurance (Disclosure and Representations) Act 2012. It replaced the old duty to volunteer everything with a duty to take reasonable care not to make a misrepresentation when answering the insurer's questions. In practice, this means answering the questions asked fully and honestly.

The consequences of getting this wrong depend on the nature of the misrepresentation. A careless misrepresentation lets the insurer put right the position as if it had known the truth, which may mean adjusting a claim. A deliberate or reckless misrepresentation can let the insurer void the policy and refuse claims. Careful, complete answers therefore protect the policyholder as much as the insurer.

This is especially important on full medical underwriting, where the declaration drives the exclusions, but it applies equally to moratorium policies, where the insurer relies on medical records at claim time. Honesty at application is the single biggest protection for future claims.

Switching insurer with an existing condition

People with pre-existing conditions face a particular risk when switching insurer: a fresh full-underwriting application could re-exclude conditions, including any that developed while insured under the previous policy. To avoid losing ground, many switch on a continued personal medical exclusions or continued moratorium basis.

On a continued-cover basis, the new insurer broadly accepts the existing exclusion position rather than re-underwriting from scratch, so conditions already in cover stay in cover and the moratorium clock is not reset. This is the usual route for switching to find a better price without sacrificing accumulated cover.

If a claim relating to a pre-existing condition is declined and the policyholder believes the decision is wrong, the insurer's complaints process applies. Where it is not resolved within eight weeks, the matter can be referred free to the Financial Ombudsman Service, which will assess whether the exclusion and any disclosure decision were applied fairly.

Frequently asked questions

Can I get private health insurance if I already have a condition?

Usually yes. Insurers will generally offer cover, but the pre-existing condition is normally excluded at the start. The policy still covers new, unrelated acute conditions that arise later.

What is the difference between full underwriting and a moratorium?

Full medical underwriting means declaring your history up front and receiving written exclusions, giving day-one certainty. A moratorium means no declaration at the start, but conditions from a look-back period are excluded until a symptom-free period is met.

How long until a pre-existing condition is covered under a moratorium?

Commonly two continuous years without symptoms, treatment, medication or advice for that condition while insured. The exact period and conditions are set in the policy wording, so check it.

What happens if I do not declare a condition?

Under the 2012 Act you must take reasonable care not to misrepresent. A careless answer can let the insurer adjust a claim; a deliberate or reckless one can let it void the policy and refuse claims.

Will switching insurer reset my exclusions?

It can if you re-underwrite from scratch. Switching on a continued moratorium or continued personal medical exclusions basis generally carries forward your existing position so cover is not lost.