If you, a family member, or a traveling companion have a pre-existing medical condition, such as heart disease, diabetes, autoimmune disorders, or other conditions, you need to be aware that most travel insurance plans exclude any losses resulting from that condition. If you have to cancel or interrupt your trip due to that condition, or if you become ill with that condition while traveling, you may not have coverage.
Single-Trip Discovery plan: If you buy your travel insurance policy within 15 days of making your initial trip payment, insure the cost of all trip arrangements, and are medically able to travel at the time of purchase, you can qualify for a waiver of the Pre-Existing Medical Condition Exclusion.
This can be a complicated subject, so make sure you read the policy, and contact battleface if you have any questions about pre-existing medical conditions.