$0 Mississippi — SSI at 18 Checklist

Katie Beckett Program in Mississippi

What the Katie Beckett Program Covers in Mississippi

The Katie Beckett program—formally known as the Disabled Children Living at Home (DCLH) option under TEFRA (Tax Equity and Fiscal Responsibility Act of 1982)—provides Medicaid coverage to children with severe disabilities who live at home rather than in an institution. In Mississippi, the program is administered through the Division of Medicaid.

The premise is straightforward: a child who would qualify for Medicaid if they were living in an institution should not have to be institutionalized just to get coverage. Katie Beckett allows these children to receive full Medicaid benefits while remaining with their families by waiving the typical parental income deeming rules that would otherwise disqualify most middle-income households.

This matters enormously for Mississippi families because standard SSI-linked Medicaid counts parental income when the child is under 18. Many families earn too much for their child to qualify for SSI—and therefore Medicaid—even though their child's medical needs are extensive. Katie Beckett fills that gap.

Eligibility Requirements

To qualify for the Katie Beckett/DCLH option in Mississippi, a child must meet several criteria:

Institutional level of care: The child must require a level of care that would be provided in a hospital, nursing facility, or intermediate care facility for individuals with intellectual disabilities (ICF/IID). This is assessed through medical records and functional evaluations submitted to the Division of Medicaid.

Income rules: Katie Beckett disregards parental income entirely. Only the child's own income counts toward eligibility, using the institutional income limit. Since most children have little to no personal income, this effectively eliminates the financial barrier that blocks SSI eligibility.

Asset limit: The child's own countable resources must remain below $2,000—the standard SSI resource limit.

Age limit: Mississippi's Katie Beckett program covers children up to age 19. This is the critical detail that makes it relevant to adult transition planning: coverage ends, and families need to have a replacement pathway in place before it does.

The Age-19 Cliff and What Comes After

When a child ages out of the Katie Beckett program at 19, Medicaid coverage doesn't automatically continue under a different category. The family must proactively establish eligibility through one of several adult pathways:

SSI-linked Medicaid: If the young adult qualifies for SSI under the adult disability standard, Mississippi's Section 1634 agreement means Medicaid enrollment is automatic. No separate application is required. But qualifying for adult SSI requires passing the age-18 redetermination, which applies the stricter adult standard focused on inability to perform any Substantial Gainful Activity.

Aged, Blind, and Disabled (ABD) Medicaid: For individuals who meet the disability criteria but have income or resources slightly above SSI limits, the ABD category may provide coverage with its own thresholds—the individual resource limit is $4,000 for long-term care Medicaid in Mississippi.

Working Disabled Medicaid: If the young adult works at least 40 hours per month and earns less than 250% of the Federal Poverty Level, the Working Disabled program provides Medicaid with a significantly higher resource limit of $24,000 and no asset spend-down requirement. Premiums apply only when countable earnings exceed 150% FPL.

ID/DD Waiver enrollment: If the individual is on the Department of Mental Health's ID/DD Waiver planning list and a funded slot becomes available, waiver enrollment requires active Medicaid eligibility. The waiver itself has a resource limit of $4,000 and an income limit of $2,982 per month (300% of the Federal Benefit Rate in 2026).

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Why Transition Planning Must Start Before the Cutoff

The biggest mistake families make is treating the Katie Beckett expiration as a future problem. By the time coverage lapses, it is too late to establish adult SSI (which requires the age-18 redetermination process and can take months), too late to get on the ID/DD Waiver planning list (which can have a multi-year wait), and too late to compile the medical documentation that adult disability determinations require.

Here is the timeline that works:

At age 14: Begin formal IEP transition planning, which Mississippi requires under State Board of Education Policy 74.19. Start compiling medical records and functional assessments.

At age 16: Apply for placement on the DMH ID/DD Waiver planning list through your regional IDD center. The ICAP assessment determines eligibility for the waitlist.

At age 17.5: Six months before the 18th birthday, compile all records for the age-18 SSI redetermination. If the young adult has assets over $2,000, consult with a special needs attorney about establishing a Special Needs Trust or opening an ABLE account.

At age 18: File for adult SSI (or complete the age-18 redetermination if already receiving child SSI). Parental income deeming ends at 18, so many previously ineligible families will qualify for the first time. Once SSI is approved, Medicaid continues automatically.

Before age 19: Confirm that adult Medicaid coverage is in place through SSI or an alternative pathway before Katie Beckett expires. If the SSI application is still pending, work with the Division of Medicaid to identify interim coverage options.

The Coordination Problem Katie Beckett Families Face

Families relying on Katie Beckett often haven't had to navigate the SSI system because their child's Medicaid came through a different door. When the program ends, they face the full complexity of the adult benefits landscape with no prior experience filing SSA paperwork, understanding the difference between SSI and Disabled Adult Child (DAC) benefits, or managing resource limits.

Our Mississippi SSI at 18 & Adult Disability Benefits Guide provides the complete transition framework for Katie Beckett families moving into the adult system, with step-by-step filing instructions, deadline trackers, and a Medicaid pathway comparison so you can identify which coverage route fits your situation before the clock runs out.

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