What should people do if they think there's been a mistake determining their eligibility for extra help?
People who will no longer automatically qualify for extra help received a letter from Medicare in late September.
The letter includes a paper application for extra help from Social Security and a pre-addressed postage-paid envelope.
These individuals can apply to see if they still qualify for extra help based on their income and resources.
(Source: U.S. Department of Health & Human Services)