WOW.......
Member from Canada posting Health Insurance Info in Snowbird section and folks jump to US Healthcare issues :S
Come on...
OP is talking about insurance coverage while visiting in US and the need to correctly fill out ins. questionnaire for coverage while in US.
No would be correct answer for question about 'having high blood pressure' BUT seeing as that same medication is used for blood pressure AND other conditions OP would need to make it known that that medication IS being taken BUT for such and such condition.
Hard to know that without medical training.....so advice from OP to the Canadians visiting about getting together with their Doctor and filling out questionnaire is good advice