If you read only one article before buying visitor or Super Visa insurance, make it this one. In our experience helping newcomer families across Canada, misunderstood pre-existing condition clauses are the single biggest reason claims get denied — not fine print about paperwork, not missed premiums, but a quiet definition called stability that most people have never heard of until a hospital bill arrives.
What counts as a pre-existing condition?
In visitor and Super Visa insurance, a pre-existing condition is generally any medical condition, illness, injury or symptom that existed before the effective date of your policy — whether or not it was formally diagnosed. That last part surprises people: if your mother had chest discomfort before flying to Canada but never saw a doctor about it, most insurers can still treat a later cardiac claim as pre-existing.
Common examples that typically fall under this definition include:
- Diabetes (type 1 or type 2, including diet-controlled)
- Hypertension (high blood pressure), even when well managed with medication
- Heart conditions — angina, arrhythmia, prior heart attack, stents, bypass surgery
- Thyroid disorders such as hypothyroidism on ongoing medication
- High cholesterol treated with statins
- Asthma, COPD, kidney disease, arthritis on treatment, and prior strokes or TIAs
Having a pre-existing condition does not mean you cannot get coverage. Many plans will cover these conditions — but usually only if they meet the insurer's definition of stable.
What does "stable" actually mean?
Stability is a technical, contractual definition, and it is stricter than "feeling fine." While exact wording varies by insurer, a condition is typically considered stable only if, for the entire stability period before the effective date, there has been:
- No new symptoms, and no worsening or increased frequency of existing symptoms
- No new diagnosis or new related condition
- No new treatment or medication prescribed for the condition
- No change in existing medication — including a dosage increase or decrease, or switching brands in a way the policy treats as a change
- No hospitalization or referral to a specialist for that condition
- No pending tests, test results or planned follow-up investigations
Notice how broad this is. A doctor lowering a blood-pressure dose because the patient is doing well still typically counts as a medication change and can restart the stability clock. The clause is not about whether your health is good — it is about whether anything about the condition or its management has changed.
How long are stability periods — 90, 120 or 180 days?
Most visitor-to-Canada policies use one of three common stability windows, measured backwards from the policy's effective date:
- 90 days — common on many standard plans, and often available for younger travellers
- 120 days — used by several insurers, sometimes tied to specific age bands
- 180 days — frequently applied to older applicants (often around age 70 and above) or to more comprehensive plans
Two practical wrinkles catch families out. First, stability is assessed per condition — a parent's diabetes can be stable while their blood pressure is not, in which case only claims tied to the unstable condition are excluded. Second, the window is usually measured back from the policy's effective date, not the purchase date, so buying early does not by itself satisfy the clause; what matters is what happened in the 90, 120 or 180 days before coverage begins.
The same insurer may apply different stability periods at different ages, and some offer optional riders that shorten the required window for an extra premium. As of 2026, a handful of plans also let you buy coverage that includes certain unstable pre-existing conditions up to a reduced benefit limit — a valuable option for parents whose medications were recently adjusted. This is exactly the kind of plan-by-plan detail where an advisor like Aniel earns their keep: the cheapest quote and the right quote are often not the same policy.
Why is this the #1 reason visitor insurance claims are denied?
When a large claim comes in — a cardiac event, a stroke, an emergency surgery — the insurer typically requests medical records from the visitor's home country and reviews the months before the effective date. If those records show a prescription change, a new symptom mentioned to a doctor, or a test that was ordered but not yet completed, the condition may be deemed unstable and the claim excluded, even though the policy was issued and the premium was paid.
Consider a realistic example. A father's blood-pressure medication dosage is increased 60 days before he departs for Canada. His family buys a policy with a 90-day stability clause. Three months into the visit he suffers a stroke linked to hypertension. Because the dosage change happened inside the 90-day window, the hypertension was not stable on the effective date — and the claim for that condition can be denied in full. Nobody lied; nobody hid anything. The timing alone was enough.
Contrast that with a mother whose thyroid medication has been at the same dose for two years and whose blood pressure pills have not changed in eight months. Under a 90- or even 180-day clause, both conditions would typically be considered stable and covered.
How do I declare conditions correctly?
Most visitor policies do not require a medical exam — many do not even ask health questions at purchase for younger applicants. That does not mean conditions are irrelevant; it means the checking happens at claim time. To protect yourself:
- Answer every application question truthfully and completely. If a questionnaire exists, an inaccurate answer can void the entire policy, not just one condition.
- Make a written list of all conditions, medications, dosages, and the date each was last changed, before you compare plans.
- Ask the visiting parent's doctor whether any tests are pending or any changes are planned — and if a change is coming, consider whether it can happen well before, rather than just before, departure.
- Keep copies of prescriptions and recent medical records. They speed up claims and prove stability.
What questions should I ask before buying?
- What is the stability period for my age — 90, 120 or 180 days?
- Does the policy define a dosage decrease as a change?
- Are there riders to cover unstable conditions, and up to what limit?
- Is the stability period measured from the effective date or the purchase date?
- What happens to stability requirements if I extend or renew the policy?
What if a claim is denied for a pre-existing condition?
A denial is not always the end. Request the denial letter and the specific policy wording relied upon, gather the medical records yourself, and file a written appeal — insurers do reverse decisions when records show the condition genuinely met the stability definition. If the appeal fails, you can escalate to the OmbudService for Life and Health Insurance (OLHI), a free, independent complaint service for Canadian insurance consumers.
Better still, get the stability question answered before you buy. Share your parents' medication history with Aniel through a quick contact form or call — in English, Hindi or Punjabi — and get matched to a plan whose stability clause actually fits their health, not just their budget.