The clear line through a lifetime of care.
Social Security writes again at 18. Medicaid writes every year. The school district writes before every IEP meeting. With Throughline you know what each letter asks of you, by when, and which office decides.
Age-18 Disability Redetermination
- What it is
- What it asks
- Who handles it

The paperwork Throughline reads
- SSA
- Medicaid
- IEP / School
- ABLE
- Guardianship
- HCBS Waivers
One letter, read three ways.
Paste the letter exactly as it arrived. Throughline names what it is, then explains what it means and what it asks of you, written at about an eighth-grade reading level. A word like redetermination comes with its meaning beside it.
Walk Through the SampleThe letter
- What it is
- A required review. Social Security re-checks SSI eligibility under the adult rules once a young person turns 18.
- What it means
- The childhood decision doesn't carry over. The adult test is a different one, and the outcome can go either way.
- What it asks of you
- Return the enclosed forms and recent medical records by the reply date so payments aren't interrupted.

Turning 18 shouldn't mean starting the system over.
At 18, Social Security reviews SSI again, this time under the rules for adults. Throughline names the review when the letter arrives, explains what the adult test looks at, and walks the next step with you.
For everyone holding the binder.
One workspace the whole circle shares. Inviting someone is always free, so the paperwork never sits with one person.
Parents and Guardians
You've been the translator for years. Throughline does the first read, so your energy goes to the decision.
Self-Advocates
It's your life and your mail. Every explanation is written to you, not about you, and ends at the office that decides.
Family and Helpers
A sibling, a grandparent, a trusted friend. Invite the whole circle, so no one person carries it alone.
Three sample letters, decoded
Turning 18 reopens a decision you thought was settled.
Age-18 reviewSample · decoded
- Document
- SSA · Age-18 Disability Redetermination
- What it is
- A required re-check of SSI under the adult disability rules.
- What it asks
- Return the enclosed forms and recent medical records.
- Who handles it
- Social Security Administration
- Deadline
- Reply by June 30, 2026 · read from the letter
Start with one document.
You don't need an account, a plan or the right words. Bring one letter and see what it asks of you and which office handles it.