Travel insurance and pre-existing medical conditions: what you must declare and why
Failing to declare a pre-existing medical condition is one of the most common reasons travel insurance claims are rejected. This article explains what counts as a pre-existing condition, what you must disclose, and how to find cover if standard policies decline or load heavily.
Why non-disclosure is the leading reason for declined claims
Travel insurance claim rejections on medical grounds are among the most contentious in the industry. The core issue is asymmetric information: you know your medical history; the insurer does not, unless you tell them. The insurer prices your risk based on what you disclose. If you withhold a material fact and later claim, the insurer is entitled to treat the contract as though it were mispriced — and to decline or reduce the claim accordingly.
This is not a technicality; it is a fundamental principle of insurance law known as the duty of fair presentation, which in the UK is governed by the Insurance Act 2015. See our guide to exclusions for how non-disclosure interacts with policy exclusions.
What you should always declare
- Any condition for which you have been prescribed medication in the past 12 months — or which you take ongoing medication for.
- Any hospital admission, outpatient appointment, or referral to a specialist in the past 12 months.
- Any condition for which you are awaiting test results, diagnosis, or treatment.
- Any chronic condition — asthma, diabetes, heart disease, epilepsy, cancer — regardless of how well controlled it currently is.
- Any mental health condition for which you have sought treatment, including depression, anxiety, or eating disorders.
- Any condition that required emergency hospital treatment while abroad in the past two years.
If in doubt: declare it. The worst outcome of declaring something unnecessary is a slightly higher premium. The worst outcome of failing to declare something relevant is a declined claim for tens of thousands of pounds in overseas medical treatment.
Finding cover with a complex medical history
Standard comparison sites and direct policies may decline, exclude, or heavily load premiums for complex conditions. Options include:
Specialist medical travel insurers
Several UK insurers specialise in cover for serious conditions, including cancer, heart disease, and organ transplants. They use detailed medical screening and can often offer cover where standard insurers cannot.
BIBA signposting service
The British Insurance Brokers' Association operates a free service that directs people with complex medical histories to brokers who handle specialist travel insurance.
Condition-excluded policy
If the condition cannot be covered at any reasonable price, some insurers offer a policy that covers all other eventualities but explicitly excludes claims related to the specific condition. This is better than no cover at all.
Credit card or annual policy review
If you already hold an annual policy or credit card travel cover, check whether it includes medical conditions. Annual policies often provide broader cover for conditions that were declared at renewal, even if not treated until a later trip.
For a broader overview of what travel insurance covers and excludes, see our travel insurance guide. See also the exclusion glossary entry and waiting period for related policy mechanics.
Pre-existing conditions FAQ
Frequently asked questions
- Definitions vary by insurer, but a pre-existing condition is typically any medical condition — physical or mental — that you have been diagnosed with, received treatment for, or taken medication for before the policy start date. Some insurers extend this to conditions you have consulted a doctor about even if no diagnosis has been made. The safest approach is to declare anything you are aware of. The MoneyHelper guide to travel insurance with a medical condition provides a useful reference on what typically needs declaring.
- Non-disclosure of a material fact — including a pre-existing medical condition — can give the insurer grounds to decline your claim entirely and, in some cases, to void the policy from inception. For medical emergencies abroad, this could leave you personally liable for treatment costs that run into hundreds of thousands of pounds. The FCA's guidance on insurance contract law explains your duty of fair presentation.
- Yes, but the cover may be more expensive or subject to exclusions. Options include: specialist medical travel insurers; policies that cover the trip but exclude claims related to the specific condition; or the BIBA (British Insurance Brokers' Association) signposting service, which refers people with complex medical histories to specialist insurers. Some NHS patients with serious conditions may also be eligible for the free Global Health Insurance Card (GHIC), though this provides emergency cover only and does not replace travel insurance.
- Many insurers require a condition to have been stable for a minimum period — typically 2 to 6 months — before they will cover it. Stable usually means no change in medication, no new symptoms, no recent hospitalisation, and no treatment change. If your condition changed recently, you may need to declare this as an instability or wait until the stability window is met. Always answer the medical screening questions honestly — if the insurer's question is ambiguous, call them and ask what they mean before answering.