If you submitted an application for coverage and are 18 years or older, you can report a life event or change about yourself or other household members on your application. Another adult on your application can report changes on your behalf, if he or she is part of your household. However, only the person who is filing a tax return for the household can attest to changes in information related to filing a tax return, tax-filing status, tax liability, and authorization to use federal tax information.
No,not unless you also call the MNsure Contact Center to request to terminate your MNsure coverage. Becoming eligible for other health care coverage, including Medicare, does not make you ineligible to stay enrolled in a qualified health plan, but it does make you ineligible to receive advanced premium tax credits for each month you are eligible for or enrolled in other minimum essential coverage.