Pre-existing Condition
Also known as: Prior condition, Existing medical condition, Declared condition, Pre-ex
A pre-existing condition is any health issue you had before your insurance policy or trip began.
Last updated: 2 April 2026
Real-world example
You have well-controlled asthma and buy travel insurance for a trip to Peru. At altitude in Cusco, your asthma flares and you need hospital treatment costing $1,200. Your insurer reviews your claim and declines it because asthma is a pre-existing condition and you didn't declare it when purchasing the policy. You pay the full $1,200 yourself.
Why travellers need to know
Pre-existing conditions are the most common reason travel insurance claims are denied. Many travellers don't realise that conditions they consider minor or well-managed (asthma, high blood pressure, diabetes, anxiety) still count as pre-existing. The solution is straightforward: declare all conditions when buying insurance, even if they seem irrelevant. Most insurers will cover declared conditions for a small additional premium.
Country-specific notes
ACA prohibits pre-ex exclusions for domestic plans only
The Affordable Care Act prohibits US health insurers from excluding pre-existing conditions, but this only applies to domestic plans. Travel insurance and international health insurance can still exclude or surcharge pre-existing conditions.
Frequently asked questions
Related guides
How Nomedic helps
Your Nomedic health record documents your conditions with dates and treatment history, giving insurers exactly what they need to cover you properly.
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