Idaho TEFRA to Adult Medicaid Transition

If your child qualifies for Medicaid through Idaho's TEFRA option right now, the rules change completely the month they turn 18. Missing this transition can create a gap in coverage — and for families relying on Medicaid to fund DD waiver services, that gap can stall the entire adult services application.

What TEFRA Does and Why It Ends

The TEFRA option (sometimes called Katie Beckett) allows children with disabilities to qualify for Medicaid based on their own medical needs rather than their family's income. It exists specifically because many children with significant disabilities live at home with parents whose household income would otherwise disqualify them from Medicaid.

At 18, TEFRA eligibility ends because the young adult is no longer a dependent child. Adult Medicaid eligibility is then evaluated under the applicable adult rules using the individual's own income and resources — parental income drops out of the calculation for this transition. Do not assume that TEFRA converts automatically or that minimal personal income guarantees approval.

The Transition Steps

Step 1: Apply for adult Medicaid at the age-18 transition. Contact your local Idaho Department of Health and Welfare (DHW) regional office before your child turns 18 so you can start the separate adult application. You can apply online through the Idaho Benefits portal, by phone, or in person. The application evaluates income, resources, and eligibility under adult rules.

Step 2: Provide the documentation DHW requests. If your young adult is already receiving SSI, include that determination. Otherwise, provide the financial and disability documentation DHW requests for the applicable adult Medicaid pathway.

Step 3: Confirm coverage timing. Ask your DHW caseworker how adult Medicaid coverage will be coordinated with TEFRA's end and what to do if processing is delayed. Do not assume coverage transfers automatically.

Why This Matters for DD Waiver Services

Adult Medicaid is the financial prerequisite for Home and Community-Based Services (HCBS) developmental disability waiver enrollment. You cannot apply for adult DD waiver services — the programs that fund certified family homes, supported employment, community integration, and self-directed supports — until Medicaid eligibility is established.

The sequence matters: Medicaid first, then the separate DHW developmental disability application, then the Liberty Healthcare functional assessment. If Medicaid lapses during the transition, the entire chain stalls.

For families who were on TEFRA primarily to access children's developmental disability services, the adult DD waiver uses a different eligibility assessment. Liberty Healthcare, Idaho's independent assessment contractor, will evaluate whether your young adult meets the Intermediate Care Facility for Individuals with Intellectual Disabilities (ICF/IID) level of care based on substantial functional limitations in at least three major life activities. This is a separate evaluation from the Medicaid financial determination.

Income and Asset Rules for Adult Medicaid

Under adult rules, Idaho evaluates only the individual's own:

• Earned and unearned income (wages, SSI, SSDI, interest)
• Countable resources (bank accounts, investments — the limit is $2,000 for an individual)

Assets that don't count include one vehicle, personal belongings, household goods, burial funds up to $1,500, and ABLE account balances up to $100,000. If your young adult starts earning income through supported employment, various Medicaid work incentive programs can help them keep coverage while working.

Common Pitfalls

The biggest mistake Idaho families make is assuming the transition happens automatically. It doesn't — TEFRA and adult Medicaid are separate programs with separate applications. If you don't apply for adult Medicaid, your child's coverage simply ends.

Second, some families delay because they're waiting on the SSI age-18 redetermination. You don't need to wait. Apply for adult Medicaid and SSI simultaneously — they're independent processes at different agencies (DHW handles Medicaid; the Social Security Administration handles SSI).

The Idaho IEP Transition to Adulthood Guide coordinates all of these age-18 transitions — TEFRA to adult Medicaid, SSI application, DD waiver eligibility, and transfer of educational rights — on a single chronological timeline so no deadline slips through.

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