The primary concern is the possible disruption of ongoing treatment for chronic illnesses such as diabetes, heart disease and mobility-related conditions.

The program's funding outlook remains bleak, but conditions at the Social Security Administration appear to have stabilized.

The change could have "catastrophic consequences for beneficiaries," a Social Security advocate says.

Essentials, not luxuries, are driving every day strain. According to the survey, 65% of respondents said the cost of everyday necessities is their top financial stressor.