Idaho Medicaid Spend Down for Disabled Adults

What Spend-Down Means in Idaho

When a disabled adult's countable monthly income exceeds Idaho's AABD Medicaid limit of $1,047, they may not qualify for standard AABD Medicaid. For some HCBS participants, Idaho may require a share of cost or patient contribution based on available income; the contribution is paid directly to providers before Medicaid pays the remainder.

For example, if a disabled adult receives $1,300 in SSDI, the $20 general disregard would make countable unearned income $1,280 before other applicable rules; the amount above the $1,047 limit would then be $233. The actual share-of-cost or patient contribution depends on the Medicaid program and DHW's determination.

The amount and how it is applied are stated in DHW's notice; do not assume that an expense from one month carries forward to another.

Why Spend-Down Is Often the Wrong Choice

For disabled adults who need continuous Medicaid coverage — especially those enrolled in or applying for the DD waiver — any share-of-cost arrangement can create a structural billing problem. Confirm with DHW and the waiver provider how the contribution affects service coverage and provider billing.

DHW's notice states the share of cost and how to document or pay it; families should confirm with DHW and providers how any arrangement affects waiver billing and services.

Better Alternatives to Spend-Down

Three alternatives typically provide more stable coverage than the spend-down arrangement:

Medicaid for Workers with Disabilities (MWD): If the individual is working, MWD allows countable income up to 500% of the Federal Poverty Level and countable resources up to $10,000. The premium is $0 for income from 0% to 133% FPL, $10/month for income from 133% to 250% FPL, and $10 to $200/month depending on income from 250% to 500% FPL. MWD provides the Enhanced Plan needed for DD waiver access.

Miller Trust (Qualified Income Trust): For individuals whose gross monthly income exceeds the $3,002 HCBS waiver income cap, a Miller Trust can be part of the process for establishing HCBS Medicaid eligibility. Income deposited into the trust remains subject to Medicaid program rules and any required patient contribution. Because the trust terms are technical, have an attorney establish or review it and confirm the required terms with DHW. Miller Trusts are primarily used for individuals receiving higher SSDI or DAC benefits.

IDAPA 16.03.05.806 protection: If the income that pushes the individual over the AABD limit is specifically from Disabled Adult Child (DAC) benefits, Idaho law requires DHW to disregard the entire DAC benefit amount when calculating Medicaid eligibility. This protection applies when the individual received SSI or AABD cash based on blindness or a disability that began before age 22 and subsequently became ineligible for and remains ineligible for AABD cash or SSI solely because the disabled adult child's RSDI benefit started or increased on or after July 1, 1987. No spend-down is needed if this protection applies.

When Spend-Down Might Make Sense

Spend-down or a share-of-cost arrangement may be considered for disabled adults who are not working (ruling out MWD), whose income is below the $3,002 HCBS cap, and whose excess income is not from DAC benefits. Confirm with DHW which recurring medical expenses or patient contributions count under the applicable Medicaid program.

The Idaho SSI at 18 & Adult Disability Benefits Guide includes a Benefits Eligibility Tracker that models income against AABD, MWD, and spend-down thresholds so families can identify which Medicaid pathway avoids coverage gaps.

See more Idaho guides →