What counts as a pre-existing condition

A pre-existing condition is not only a condition you had already been diagnosed with. Insurers write the definition more broadly than that: it usually covers any condition for which you had symptoms, took advice, received treatment or medication, or underwent investigation, before your cover started, whether or not a doctor had given it a name.

Why symptoms count, not just diagnosis

This is the detail that catches people out. If you had recurring lower-back pain for several months before taking out a policy, but never saw a GP about it, an insurer can still treat that back pain as pre-existing once you claim for it, because you had the symptom before cover began. The definition is built around what your body was doing.

Advice, treatment and investigation all count

Insurers' published definitions typically list several routes into the same conclusion. A condition can be treated as pre-existing if, before your start date, you:

  • had signs or symptoms of it, even without a formal diagnosis
  • sought or received advice from a GP or other clinician about it
  • were prescribed medication, treatment or therapy for it
  • had tests, scans or other investigations relating to it

Any one of these can be enough on its own. None of them requires that you knew, at the time, what the underlying condition was.

Wording differs between insurers

The exact sentence used to define a pre-existing condition is not identical across insurers. Some set it out in a single clause, others break it into several conditions joined by "or". The practical effect is similar, but the precise wording decides borderline cases, so it is worth reading the definition printed in your own policy document.

The claims process

How a claim moves from treatment to decision

A claim under a moratorium is not judged on your diagnosis alone. It is judged by matching the date symptoms or treatment first appear in your medical records against the date your policy began, and against how long you have gone since then without symptoms, treatment or advice for that condition.

  1. Treatment or a referral is proposed

    Before an admission or a specialist referral goes ahead, most insurers ask you to confirm it with them first. That call or form is the point at which the condition you are claiming for is named and checked against your policy for the first time.

  2. Your GP or consultant is asked for your notes

    The insurer does not rely on what you tell them about your history. They write to the practice holding your records and ask for the notes themselves, covering the years before your policy started as well as the treatment you are claiming for now.

  3. Your notes are checked against the look-back period

    The look-back period is the stretch of time before your policy began that the insurer is entitled to examine. What happens next depends on what that stretch contains.

    A single GP visit for the same symptoms after your policy started can reset the trouble-free period, even where the original problem was years before you took out cover.

    Symptoms, treatment or advice found inside it

    The condition is treated as pre-existing and excluded at outset, whatever your policy start date says and however long ago the entry was made.

    Nothing found inside it

    The insurer instead checks how long you have gone since the policy began, free of symptoms, treatment and advice for that condition, against the trouble-free period the moratorium requires.

  4. The insurer writes back with a decision

    You get a decision in writing: paid, excluded, or a request for further records before a decision is made. The wording the insurer relies on sits in the membership certificate issued after you bought the policy.

None of this tells you what a particular claim will decide. Only your insurer, reading your own records against your own policy wording, can do that.

Where the moratorium terms are actually written down

When you take out a policy, the paperwork you see at that stage is an illustration of cover. The exact wording that decides whether a particular condition is excluded, and for how long, sits in a different document that only arrives once you've bought the policy.

The membership certificate

That document is usually called the membership certificate. It sets out the moratorium underwriting terms as they apply to you specifically: the date your cover started, the look-back period the insurer is using, and the trouble-free period you need to clear before a past condition can come into cover. If the insurer has applied any individual exclusion to your history, that's where it will be recorded too.

Nothing in the quote stage spells this out in the same detail, because the quote is describing a type of cover. The certificate is the first document written against you.

What to look for when it arrives

  • The date your moratorium cover is treated as having begun
  • The length of the look-back period applied to your history
  • The length of the trouble-free period required before a past condition can be covered
  • Any condition excluded by name

If any of this is unclear once you have the certificate in front of you, the insurer's own policy document is the place to raise it.

Why the condition that brought you here is usually excluded at the outset

The condition that sent you looking

Most people don't start comparing private medical insurance out of general interest. A diagnosis, a referral stuck on an NHS waiting list, or symptoms a GP has already written down somewhere usually comes first. That condition is almost always the one an insurer treats as pre-existing, and it's worth knowing what that means before you look at anything else.

How moratorium underwriting treats it

Moratorium underwriting is a basis under which any condition you've had symptoms, treatment or advice for before the policy starts is excluded automatically, with no medical form to fill in at the time you buy. The condition that brought you here falls inside that exclusion from the first day of the policy. It isn't weighed up individually. It's excluded simply because it was already there.

How full medical underwriting treats it

Full medical underwriting (FMU) works differently in process but not usually in outcome. Here you declare your medical history in detail before the policy starts, and the insurer decides how to treat each condition on its own. A condition you're currently being investigated or treated for is still very likely to be excluded, typically added by name as a permanent exclusion on your policy.

A worked example

Say a shoulder problem has taken you to the GP a few times over the past year, and that's what pushed you to start looking at cover. Under a moratorium, that shoulder problem sits inside the exclusion from day one, with no separate decision to make about it. Under full medical underwriting, you'd declare it, and the insurer would most likely exclude it by name, regardless of which basis or insurer you chose.

What this means for your decision

None of this makes one underwriting basis wrong. It means the condition that brought you to insurance in the first place is not, in the ordinary case, what a new policy will pay to treat. Where the two bases genuinely differ is in how they handle conditions that come up after your policy starts, and that's the question worth spending your time on. You can read how insurers define a pre-existing condition, and what a claim is actually judged against, in the sections that follow.

Pre-existing conditions and claims: common questions

What does an insurer mean by 'pre-existing condition'?

A pre-existing condition is one you had symptoms of, were investigated for, or received advice or treatment for before your policy started, whether or not you had a formal diagnosis at the time. Insurers judge this against your medical records when a claim is made. A condition can still be treated as pre-existing even if you didn't know what it was when you took out the policy.

Does it matter whether I'd been formally diagnosed?

No. What counts is whether you had symptoms, sought advice, or had tests or treatment before the policy began. A visit to a GP for an ongoing symptom can be enough for an insurer to treat the condition as pre-existing later, even without a diagnosis at the time.

Is a pre-existing condition excluded forever?

It depends on which underwriting basis your policy uses. Under moratorium underwriting, a condition excluded at the start can come into cover after a trouble-free period, a stretch of time with no symptoms, treatment or advice for that condition. Under full medical underwriting, exclusions are set individually when you apply and generally stay in place for the life of the policy unless the insurer agrees to review them.

Where are the actual terms that will decide my claim?

The wording that governs a claim is usually in the membership certificate, a document the insurer issues after you've bought the policy. It lists which conditions are excluded and from what date, so it's worth reading in full once it arrives.

If I switch insurer, do my old exclusions carry over or reset?

A new insurer applies its own underwriting from scratch, so a condition that was already present can be excluded again under the new policy. Moratorium look-back and trouble-free periods commonly restart from the date the new policy begins. It's worth checking how an insurer describes its own underwriting basis before you switch; the site's directory of UK health insurers sets out where to find each insurer's published terms.

Will a single GP visit restart the clock?

Yes, under moratorium underwriting. Any new consultation, test or treatment for the same condition, even a routine check, restarts the trouble-free period from that date, so a visit in year four of a five-year countdown can put you back to the start. It's one reason it's worth reading your membership certificate.

Can this tell me whether my own condition will be covered?

No. These are the general rules insurers publish. Only the insurer can weigh your specific medical records against its own policy when a claim is made. For a view on your own situation, you'd check your policy wording directly or speak with the insurer or a regulated adviser.