Vermont Medicaid After SSI Turns 18: How to Keep Green Mountain Care Coverage

When a young adult turns 18 in Vermont and SSI goes through the age-18 redetermination, the question families really want answered is not just about the monthly cash payment — it is about Medicaid. Green Mountain Care covers medical appointments, prescriptions, mental health services, and most critically, it is the gateway to developmental disability waiver services. Losing Medicaid often matters more than losing the SSI check itself.

How Vermont's Section 1634 Link Works

Vermont is a Section 1634 state. This means that anyone who receives SSI automatically qualifies for Medicaid through Green Mountain Care. There is no separate Medicaid application — SSI approval is the Medicaid determination. This simplifies things when everything goes smoothly, but it creates a dependency: if SSI stops, the automatic Medicaid link breaks.

During the age-18 redetermination, as long as SSI continues, Medicaid continues. If the notice is a medical cessation, request payment continuation in writing within 10 days after you receive the notice if you want SSI payments to continue through the reconsideration and hearing levels. Use the 60-day appeal deadline in the notice and contact DVHA promptly about Medicaid options if SSI stops.

What Happens If SSI Ends

If SSI benefits ultimately cease — either because the redetermination denies eligibility or because income rises above SSI limits — Medicaid does not necessarily end. Vermont has multiple alternative pathways:

Medicaid for the Aged, Blind, and Disabled (MABD) Adults who meet the Social Security disability definition but have income or assets above SSI limits may qualify for MABD Medicaid. The application requires Form 205SUPP submitted through the my.vermont.gov portal or directly to the Department of Vermont Health Access. MABD has its own income limits, and individuals in Chittenden County face a different Protected Income Level ($1,483/month) than the rest of the state ($1,375/month).

Medically Needy Pathway If income exceeds the standard MABD limits, Vermont's medically needy pathway allows individuals to "spend down" excess income on medical expenses to qualify. You submit documentation of medical costs to DVHA so it can evaluate eligibility under the applicable medically needy rules.

Section 1619(b) Medicaid This federal provision specifically protects Medicaid for SSI recipients who lose their cash benefit because of earnings. If your young adult is working and their income pushes SSI to zero, Section 1619(b) can maintain Medicaid as long as they still meet the disability criteria, need Medicaid to continue working, and have income below Vermont's annual threshold, which is $52,699 in 2026.

The Katie Beckett Transition at Age 19

Some Vermont children receive Medicaid through the Katie Beckett pathway, which uses institutional-level-of-care criteria and disregards parental income. This pathway typically covers children up to age 19. At that point, the young adult needs to transition to adult Medicaid — either through SSI's automatic link or through MABD.

If your teenager received Medicaid through Katie Beckett rather than through SSI, the transition at 19 is a separate event from the SSI age-18 redetermination. Plan for both: the SSI review at 18 and the Medicaid pathway transition at 19.

Why Medicaid Matters Beyond Medical Care

For families applying for developmental services through Public Consulting Group (PCG), Medicaid is not optional — it is a prerequisite. Vermont's developmental disability services are funded under the Global Commitment to Health Section 1115 waiver, which is a Medicaid waiver program. Without active Medicaid enrollment, your young adult cannot receive waiver-funded services through a Care Management Organization, regardless of clinical eligibility.

This is why maintaining Medicaid during the SSI transition is the single highest priority for families navigating the adult system. Even if the SSI cash benefit is small or eventually eliminated by other income, preserving the Medicaid connection keeps the door open for developmental services.

For the complete Medicaid pathway comparison, application contacts, and the timeline connecting SSI, Medicaid, and developmental services, see our Vermont SSI at 18 & Adult Disability Benefits Guide.

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