Travel Insurance and Pre-Existing Medical Conditions
Read the medical-stability definition and the period reviewed before departure to avoid a denied claim.

In this article
Travel insurance rests on a definition travellers too often discover when a claim is denied: medical stability, a contractual notion rather than a medical one. A condition is covered if it stayed stable during the period before departure, three to six months depending on the policy. Stability is defined by no new diagnosis, no new symptoms, no hospitalization and no change in medication, dosage included. Even an adjustment that reflects better control breaks stability. If a change happens before departure, call the insurer rather than staying silent. Depending on the policy, the condition becomes uncovered, a rider exists, or a specialized insurer with a detailed questionnaire covers the condition as it stands, at a surcharge. During the trip, non-urgent care requires the assistance line's prior authorization, and in an emergency you call the line as soon as possible. This article dissects the stability definitions, the options by calendar and the procedures that make a claim settle instead of being argued.
Read the contract's definition of stability
The pre-existing condition clause rests on a precise notion, stability, which each insurer defines in its own way. The typical wording requires that during a set period before departure there was no new diagnosis, no change of treatment, no change in dosage, no new symptom and no consultation for worsening. Some contracts explicitly exclude dose adjustments. Others tolerate changes of brand for the same medication. That definition is the heart of a travel contract, more so than the coverage amount. Read it in full before purchase, not after.
Count the review period backwards
The stability period generally runs from three to twelve months before the departure date, depending on the insurer, age and product. Count backwards from the departure date, with your medical file in hand rather than from memory. A consultation for a minor adjustment three months before the trip can be enough to break the stability of a condition controlled for fifteen years. Check appointment, prescription and renewal dates concretely. They are often more revealing than anyone's recollection of them.
Declare every change, however minor
Complete the medical questionnaire with complete accuracy. Omitting a seemingly unimportant detail is enough to void the coverage. A change of medication, a test ordered by the doctor, a consultation for an unexplained symptom: all of it gets declared. Keep the completed questionnaire along with the insurer's confirmation. A change occurring between buying the policy and departing, such as a new prescription, must also be reported. Stability is assessed as of the departure date, not the purchase date, a distinction that escapes almost everyone.
Get authorization before treatment
Most policies require contacting the assistance service before receiving care, except in an immediate life-threatening emergency. Failing that obligation can reduce the settlement substantially, sometimes by half, even for care otherwise covered. Carry the assistance number on you, not only in documents left at home. If you consult the insurer before departure about a specific condition, do it in writing and keep the answer. It is the only way to know whether the coverage will genuinely apply when the day comes.
Quebec scenario
The trip to Greece has been booked for months when the doctor of a retiree in Chicoutimi adjusts her blood-pressure medication, a simple dosage change, three weeks before departure. Since a friend's claim was denied, she has made it a habit to reread her travel insurance before leaving, starting with the pre-existing-conditions clause. The stability definition fills a dense paragraph. A condition is covered if it has remained stable during the period before departure, six months in her policy. Stability is defined there by the absence of new diagnosis, new symptoms, hospitalization and, the crucial point, any change in medication, dosage included, whether down or up. Last week's adjustment therefore breaks her condition's stability, and a blood-pressure emergency during the trip would not be covered, even though the change reflects better control. She compares the solutions in three calls. Her credit card's insurer applies a similar definition. A specialized insurer offers a policy with a detailed medical questionnaire that covers the condition as it stands, for $180 more. Her current policy offers a rider reducing the required stability period to thirty days after stability returns, an option her calendar cannot use. She takes the specialized policy, declares the change in black and white, and keeps the rule for all future trips: between the doctor and the insurer, the order of the calls matters, and the second must always know what the first has done.
Checklist
- Read your policy's stability definition
- Count the period examined before departure
- Treat any dosage change as a break
- Call the insurer before leaving, never stay silent
- Compare the rider and a specialized insurer
- Declare the changes in black and white
- Get authorization before non-urgent care
- Call assistance the moment of an emergency
- Travel with the policy, numbers and medication list
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