Travel insurance while cancer is in remission

Edit: Nevermind I found the Pre-existing Conditions Waiver rules. The insurance from our United Club credit card does not have this benefit but a standalone policy from Allianz does. Even though I answered my own question, leaving this up in case it helps anyone else in a similar position

Husband just finished chemo and is considered to be in remission / no evidence of disease. We want to celebrate with a caribbean vacation later this year. If he's unlucky and relapses, would travel insurance consider that a pre-existing condition?