"disability" (as in a medical condition), not "impairment" (as in drunk or stupid).
Don't worry, the "You faced a...planned marketplace system outage" is the catch-all that everyone in the country can use, because the marketplace certainly had planned outages, and how can they prove that wasn't the time you tried to apply?
Don't worry, the "You faced a...planned marketplace system outage" is the catch-all that everyone in the country can use, because the marketplace certainly had planned outages, and how can they prove that wasn't the time you tried to apply?