Originally Posted by
Often1
I don't know any carrier that will or even has the ability to extend ticket validity beyond one year.
Your best bet here is to make a claim on your travel insurance based on the current medical emergency.
You're assuming that the OP had travel insurance for the previously ticketed flight? If so, wouldn't the time to file a claim have already passed?
Any new travel insurance, including if purchased for any rebooked ticket that the OP would then cancel, will have trouble due to the pre-existing condition.