How to apply for the Idaho adult DD Waiver

Getting an adult onto Idaho's Developmental Disabilities Medicaid Waiver can feel like a maze. This guide lays out the whole path in order, in plain language, so you know what to expect and what to gather. We link to the official Idaho sources at each step so you can verify everything yourself.

1. Are you eligible?

The adult DD Waiver (federal 1915(c) waiver #0076) has a few requirements, and all of them must be met:

• Age 18 or older, with no maximum age. Children under 18 use a separate children's program.
• A qualifying developmental disability: a chronic condition that appeared before age 22 and is expected to continue indefinitely, attributable to intellectual disability, cerebral palsy, epilepsy, autism, or a closely related condition needing similar care.
• Substantial limits in 3 or more of 7 life areas: self-care, receptive and expressive language, learning, mobility, self-direction, capacity for independent living, and economic self-sufficiency.
• A need for an ICF/IID level of support (the level an institution would provide), but received at home or in the community instead.
• Financial eligibility for Home and Community-Based Services (HCBS) Medicaid. As of January 2026 the individual income limit is about $3,002 per month and the resource (asset) limit is $2,000, but these change every year, so check the live limits.

Sources: Idaho Code 66-402 (the legal DD definition), DHW: Apply for Adult DD Programs, and the live DHW Medicaid income limits.

2. How to apply: two applications, started together

This trips up almost everyone: Idaho needs two separate applications, and one does not cover the other. Start both.

Step 1: Apply for HCBS Medicaid (the financial side)

The easiest way is online through idalink, Idaho's benefits portal. You can also call 877-456-1233, visit a DHW field office, or apply by mail. Have ready proof of identity, household income, resources or assets, and immigration status if it applies. See DHW's Medicaid application page for every method.

Step 2: Submit the DD application packet (the program side)

Download the Adult DD Application Packet and the "Applying for DD Services Step-By-Step" guide from the DHW adult DD page (or ask your regional office to mail one), complete it, and return it with supporting documentation to your regional DHW developmental-disabilities office.

What to include as proof:

• Documentation of the qualifying diagnosis with onset before age 22 (for intellectual disability, an IQ score around 70 or below).
• A current health or physical exam and a current medication list.
• Names of treatment providers, and any relevant records such as seizure logs.

Treasure Valley families submit to the regional Bureau of Developmental Disability Services office serving their county (Ada and the surrounding counties are served from 1720 Westgate Dr, Suite B, Boise, phone 208-334-0940). Confirm your exact office on the DHW office locator before you mail anything.

Sources: DHW Apply for Adult DD Programs, idalink.

3. The assessment, the decision, and the waitlist

• Once your packet is complete, Idaho's contracted independent assessor contacts you to schedule a functional assessment that confirms eligibility and sets your support level. The current contractor is Liberty Healthcare; the DHW page itself does not name the contractor, so confirm with DHW.
• Idaho currently uses the SIB-R (Scales of Independent Behavior-Revised) to set the support level. A move to a newer tool (the SIS-A) has been announced but is uncertain, so verify the current tool with DHW.
• The assessment sets an individualized budget tied to functional, behavioral, and medical needs. The assessor sets the budget, not the family, and higher need means a higher budget.
• You receive a written Notice of Decision telling you whether you are eligible and how to appeal. You can appeal both an eligibility denial and the budget amount, and eligibility is reviewed at least once a year.

Sources: DHW Apply for Adult DD Programs, Liberty Healthcare Idaho.

4. Your plan of service: Traditional or Self-Directed

Once you are found eligible, you choose how services are delivered and fill out a Plan Developer or Support Broker Choice Form. Either way, you keep the right to choose your own providers.

Traditional services

You hire an agency, and you pick a Plan Developer who hosts your person-centered planning meeting, writes the Individual Support Plan (ISP), and submits it to the state. A paid plan developer cannot also be paid to provide other services on that same plan, which keeps their advice independent. (DHW: Traditional services)

Self-Directed Community Supports ("My Voice, My Choice")

You hire your own Community Support Workers, set their schedule, and manage your budget with help from a Support Broker, while a Fiscal Employer Agent handles payroll and taxes. (DHW: Self-Directed services)

The person-centered planning meeting is where you choose your goals, your services, and which provider delivers them. That choice is written into your plan, and your plan has to fit within the budget the assessment set.

5. Choosing a certified residential habilitation provider

• Residential habilitation is delivered in the person's own home, family home, or a certified family home, never in an institution. Idaho rule (IDAPA 16.03.10.703) specifically excludes nursing facilities, hospitals, and ICF/IID settings.
• When residential habilitation is agency-delivered, the agency must be certified by DHW and must employ and supervise the direct-care staff.
• There is no public, searchable directory of certified agencies. Ask your assessor, plan developer, or regional DHW office for the current list serving your area, then choose at your planning meeting.

Choosing the right agency is a big decision, so we wrote a separate walkthrough: how to choose a residential habilitation provider, including how to verify certification, the questions to ask, and the red flags to watch for.

6. What it costs your family

• For an enrolled, Medicaid-eligible participant, the covered services cost your family nothing out of pocket. Medicaid pays the provider.
• Room and board is not covered. Rent or mortgage, utilities, and food remain the participant's responsibility, usually paid from SSI or personal income. This is standard for every Idaho HCBS waiver.
• The total cost of a person's waiver services cannot exceed the average Medicaid cost of institutional (ICF/IID) care.

Sources: IDAPA 16.03.10.703, DHW income limits.

How GemState helps

This process is exactly the "red tape" we help families through. GemState is a Treasure Valley residential-habilitation agency, and we will walk you and your loved one through every step above, from your first question to the day services start. The fastest first move is our quick eligibility check or simply sending us a note.

Common questions