Health insurance medical questions what insurers ask, and why it matters

Every health insurance application starts with the same basic question: what's your medical history? The health insurance medical questions you're asked exist so the insurer can work out what they can fairly cover and price your policy accordingly.

Health insurance is designed for new, short-term conditions that respond to treatment, not for problems you already have. Insurers use your answers, or in some cases the absence of any questions, to decide which conditions will be excluded from your cover from day one.

The questions themselves, and how much detail you need to give, depend entirely on which of the three underwriting methods your insurer uses: full medical underwriting, moratorium underwriting, or medical history disregarded.

Full medical underwriting (FMU) is the most detailed route. You'll complete a health questionnaire, either online, on paper, or over the phone with an advisor, covering your medical history in depth.

What you'll typically be asked

• Height, weight and lifestyle: your BMI, smoking status, and alcohol consumption
• Existing conditions: anything you've been diagnosed with, treated for, or investigated for
• Medication: current prescriptions and what they're for
• Hospital admissions and surgery: any procedures, even minor ones, from recent years
• Symptoms under investigation: anything you're currently waiting on tests or results for
• Family medical history: some insurers ask about close relatives, particularly for certain hereditary conditions

Once you've answered, the insurer reviews your responses and confirms your personal exclusions before your policy goes live. This gives you certainty: you'll know what isn't covered from the start, rather than finding out during a claim.

The trade-off is effort. Answering a detailed medical questionnaire takes longer than moving straight to moratorium terms, and you need to be thorough. Missing something, even unintentionally, can cause problems later.

Moratorium underwriting skips the health questionnaire altogether. You don't declare any medical history when you apply, which makes it quicker to set up than full medical underwriting.

Instead of asking upfront, the insurer applies an automatic rule: any condition you've had symptoms, advice, medication or treatment for in the five years before your policy started is excluded. If you stay symptom-free and don't need advice or treatment for that condition for two continuous years after joining, it can become eligible for cover.

The catch is uncertainty. Because you haven't declared anything, you won't get a personalised list of exclusions when you join. You only find out whether a condition is covered if you try to claim for it, and the insurer checks your medical records against the five-year rule at that point.

Moratorium underwriting tends to suit people who want faster acceptance and are comfortable with that uncertainty, particularly if they don't have a complicated recent medical history.

Medical history disregarded (MHD) removes health questions from the equation entirely. You're accepted regardless of your medical history, with no questionnaire and no moratorium look-back period.

This approach is most common with:

• Company or group health insurance schemes, where everyone joining at the same time is accepted without individual health checks
• Some guaranteed acceptance policies aimed at older applicants
• People switching insurers who want to carry over cover they've already built up under a previous policy

MHD generally costs more than moratorium or full medical underwriting for the same level of cover, because the insurer takes on more risk without any health information. Some MHD policies also apply general exclusions, such as excluding all conditions present at the start date rather than assessing them individually.

A pre-existing condition is any health issue you had symptoms, advice, medication, investigation or treatment for before your policy's start date, or during the moratorium look-back period if that's the underwriting type you've chosen.

This catches more than people expect. If you had a handful of physiotherapy sessions for back pain a few years ago, back-related conditions could be excluded. If you've taken medication for anxiety or high blood pressure, even briefly, that history needs to be declared under full medical underwriting or it will fall inside the moratorium exclusion window.

It's not just diagnosed conditions that count. Symptoms you haven't had investigated yet, such as ongoing joint pain you've mentioned to your GP but not followed up on, can also be treated as pre-existing if they're linked to something that develops later.

Some insurers offer moratorium terms with a shorter or longer look-back window than five years, and a small number will review individual exclusions again after a defined symptom-free period. An advisor can check the specific terms of the underwriting you're considering. Read more about how insurers treat pre-existing conditions in our dedicated guide.

Most health insurance applications don't require a physical medical examination. You'll answer questions about your health yourself, and the insurer makes their assessment based on your answers.

There are exceptions. If your answers flag a condition the insurer needs more detail on, they may ask for your permission to request a GP report. This is more common for older applicants, higher levels of cover, or where a declared condition needs clarifying before terms can be confirmed.

You'll always be asked to consent before an insurer contacts your GP. If a report is needed, it can add a few weeks to your application while your GP practice provides the information, so it's worth factoring this into your timeline if you need cover to start by a specific date.

Some insurers also offer virtual health assessments as an alternative to a GP report, using a short phone or video call with a nurse to clarify details from your questionnaire.

Whichever type of underwriting you go through, you have a legal duty to take reasonable care not to make a misrepresentation when you apply. In practice, that means answering medical questions honestly and completely, even if you're worried a condition might be excluded.

The consequences of getting this wrong can be serious. If an insurer discovers after a claim that something relevant wasn't disclosed, they can treat the policy as if it never existed, refuse the claim, or apply extra exclusions retroactively. This applies even if the non-disclosure wasn't deliberate.

If a question is unclear, the safer approach is to include the detail and let the insurer decide, rather than leaving it out on the assumption it's minor or unrelated. Insurers are used to seeing a wide range of medical histories, and declaring something doesn't automatically mean it will be excluded.

For independent guidance on how medical underwriting works across the insurance industry, the Association of British Insurers publishes consumer information on disclosure and underwriting. MoneyHelper also offers free, independent guidance on protecting your health and finances more broadly.