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Pre-existing conditions and underwriting, explained

IPMIAfrica explains how international private medical insurance handles the conditions you already have: what counts as pre-existing, how full medical underwriting, moratorium, continued personal medical exclusions and switch terms work, and which suits whom.

Last updated: 15 October 2026 · Reviewed by IPMIAfrica
In short: International insurers handle pre-existing conditions in one of three ways. Full medical underwriting gives a written decision before you buy. A moratorium excludes recent conditions for a set period and brings them into cover if you stay symptom and treatment free. Switch terms or CPME carry an existing plan's position across. Moratorium suits little or no history, FMU a known history, and switch terms anyone already insured.
Key takeaways
  • A pre-existing condition includes symptoms you had but never investigated, not only diagnosed diseases.
  • Under FMU, forgetting to declare something can be treated as non-disclosure and a claim declined or the plan cancelled.
  • A chronic condition needing ongoing medication never clears a moratorium, because the medication itself resets the period.
  • Switch terms usually require the old plan to be in force and the new cover to be no higher than the old.
  • Moving from a local employer plan to an individual international plan is usually a fresh application, not a switch.

What counts as a pre-existing condition

A pre-existing condition is any illness, injury or symptom that you had, were treated for, were advised about or could reasonably have been aware of before the plan started. The definition is wider than most people expect. It is not limited to diagnosed diseases. A back problem you saw a physiotherapist about, a skin lesion a GP looked at, raised blood pressure noted at a check-up, or symptoms you had but never investigated can all count, and so can conditions that are related to or arise from them.

Insurers care about this because international health insurance is annual cover for future events, priced on the assumption that the insured pool is broadly healthy at the start. Without rules on pre-existing conditions, people would buy cover only when they already needed treatment, and the premium would be unaffordable for everyone else.

What matters for you is which method the insurer uses to deal with your history, because it decides what is covered from day one, what is excluded, and what might come into cover later.

Full medical underwriting (FMU)

Under full medical underwriting you complete a medical questionnaire when you apply. You declare every condition, symptom, treatment and consultation you can recall, usually going back a number of years and sometimes without a time limit for serious conditions. The insurer may ask follow-up questions or request a report from your doctor. It then gives you a written decision before you buy.

The decision will say one of four things about each condition: it is covered at standard terms, it is excluded, it is covered with a loading (a higher premium), or the application is declined. Exclusions are usually specific and written into your certificate, so you know exactly where you stand.

FMU suits people with a known medical history who want to know before they commit what will and will not be covered. It also suits older applicants and anyone who would rather have a clear answer than rely on a rule.

Moratorium underwriting

Under a moratorium you do not complete a detailed medical questionnaire. Instead the insurer applies a rule: any condition you had symptoms of, or treatment or advice for, in a set period before the plan started is automatically excluded for a set period after it started. If you then go a further set period without symptoms, treatment, medication or advice for that condition, it comes into cover.

Because the rule is applied at claim time rather than at application, the insurer looks at your medical records when you claim to decide whether the condition falls within the moratorium. If you have been clear of it for the required period, the claim is paid. If not, it is declined and the clock restarts.

Moratorium suits people with little or no medical history, and people who would struggle to document their history accurately. It is a poor fit for anyone with an ongoing condition they expect to claim for.

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Continued personal medical exclusions (CPME) and switch terms

If you already hold an international plan and want to move to another insurer, you may be offered terms that carry your existing position across rather than starting again.

Continued personal medical exclusions (CPME) means the new insurer accepts you on the same specific exclusions that were written into your existing certificate, no better and no worse. Conditions that were covered under the old plan remain covered; conditions that were excluded remain excluded. This is most common when you were originally fully medically underwritten, because the exclusions are already written down.

Switch terms, sometimes called continuation or transfer terms, is the broader label for moving between insurers without fresh underwriting. Depending on the new insurer it can mean CPME, or it can mean continuing a moratorium with the time you have already served counted, so that conditions that had cleared under the old plan are not re-excluded. Insurers usually set conditions: that the old plan is still in force, that the new cover is no higher than the old, that you have not had a serious condition since the old plan started, and that you supply the old certificate and a recent renewal notice.

If you have been insured for years and have developed a condition in that time, switch terms are the single most important thing to ask for when you compare, because a fresh application would exclude it.

Which method suits whom

Your situationUsually the better fitWhy
Little or no medical history, want cover quicklyMoratoriumFast, and nothing significant to be caught by the rule
Known conditions, want certainty before buyingFull medical underwritingWritten decision up front; minor conditions often covered
Ongoing condition needing regular medicationFull medical underwritingWould never clear a moratorium; FMU may cover with a loading
Already insured, condition developed while coveredSwitch terms or CPMEKeeps the condition covered; a fresh application would exclude it
Older applicant or retiring abroadFull medical underwriting, or switch terms if already insuredCertainty matters more as the likelihood of claims rises
Family with mixed historiesAsk whether members can be underwritten differentlySome insurers allow one method per person

Not every insurer offers every method, and some offer different methods in different markets. Expatriate Healthcare, whose plans are underwritten by Gen Re / Guardrisk, and the larger international insurers such as Cigna Global, Allianz Care and Bupa Global each set out their approach in their plan documents. The IPMIAfrica insurer pages summarise them.

What is different for applicants in Africa

The underwriting methods are the same everywhere, but a few things matter more for people living in Africa.

How to prepare an application

  1. Write down your history before you start: conditions, symptoms, consultations, tests, medication and dates. Include things that seem minor.
  2. Decide which method you want using the table above, and tell the broker. Nomi asks the questions that point to the right one.
  3. If you are already insured, have your current certificate and last renewal notice ready, and ask every insurer you compare whether they offer switch terms or CPME.
  4. Under FMU, declare everything. Over-disclosure costs nothing; non-disclosure can void a claim.
  5. Read the decision. Check every exclusion, ask what it covers, and ask whether and when it can be reviewed.
Key point: the underwriting method decides what the plan will actually pay for you. If you have no history, moratorium is quick. If you have a history, full medical underwriting gives certainty. If you are already insured, ask for switch terms before anything else, because a condition that developed while you were covered will be excluded on a fresh application.

Frequently asked questions

What is the difference between full medical underwriting and a moratorium?
Under full medical underwriting you declare your history and get a written decision before you buy. Under a moratorium you do not declare; conditions from a set period before the start are excluded for a set period after it, and come into cover if you stay symptom and treatment free. FMU gives certainty; moratorium gives speed.
Will a chronic condition ever be covered under a moratorium?
Usually not. A condition that needs ongoing medication or check-ups never completes the symptom-free period, so it stays excluded. If you have a chronic condition, full medical underwriting may cover it with a loading, which is often worth more than a cheaper plan that never pays.
What are switch terms and CPME?
Ways of moving between insurers without fresh underwriting. CPME means the new insurer accepts the exact exclusions on your existing certificate. Switch terms is the broader label and can also mean continuing a moratorium with time already served. Both keep conditions that developed while you were insured in cover.
What happens if I forget to declare something under FMU?
The insurer may treat it as non-disclosure. A claim for that condition can be declined and, if the omission was serious, the plan can be cancelled. Declare everything you can recall, including things that seem minor. Over-disclosure costs nothing.
How does IPMIAfrica handle underwriting?
IPMIAfrica is a free comparison site. Nomi asks about your health so that the quotes reflect the right underwriting method, then compares 20+ insurers live. Quotes are indicative; the insurer confirms acceptance and any exclusions or loadings at underwriting, and an experienced broker can help you through the application.
Does an exclusion also exclude evacuation?
Yes. If a condition is excluded, treatment and evacuation for it are both excluded. For anyone living outside a main city in Africa that is a serious gap, and it is the main reason people with an ongoing condition choose full medical underwriting with a loading over a moratorium.

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This page is general information, not personal or medical advice. Prices are indicative and confirmed by the insurer at underwriting. For advice on your situation, speak to an experienced broker.