# The SSDI Application Process

You can apply for SSDI online at ssa.gov, by phone at 1-800-772-1213, or in person at a local Social Security field office. The SSA verifies work credits and non-medical eligibility, then forwards the file to your state's Disability Determination Services (DDS) for medical review, which typically takes 6 to 8 months. Most initial applications are denied, so the appeals process is a normal part of the road to approval.

**Direct answer:** The SSDI application process has four main stages: filing the application with the SSA, medical review by a state Disability Determination Services (DDS) office, an initial decision, and — for most claimants — one or more levels of appeal.

## How do I apply for SSDI?

    You can apply online at ssa.gov, by calling 1-800-772-1213, or in person at any Social Security field office.

    
## What documents does SSA need?

    The SSA asks for medical records, treatment history, work history for the last 15 years, W-2s or self-employment tax returns, and information about any workers' compensation or public disability benefits.

    
## How long does the initial decision take?

    Most initial SSDI decisions take 6 to 8 months, though [Compassionate Allowances](/answers/what-is-a-compassionate-allowance) conditions can be decided in weeks.

    
## What happens if I'm denied?

    You have 60 days to file a request for reconsideration; if that is denied, the next step is a hearing before an Administrative Law Judge — see the [appeals hub](/appeals).

## Sources
- SSA — Apply for Disability Benefits — https://www.ssa.gov/benefits/disability/apply.html
- SSA — The Appeals Process — https://www.ssa.gov/benefits/disability/appeal.html
- SSA — Compassionate Allowances — https://www.ssa.gov/compassionateallowances/

## Related questions
- [How long does SSDI approval take?](https://ssdidirectanswers.com/answers/how-long-does-ssdi-approval-take)
- [Why was my SSDI denied?](https://ssdidirectanswers.com/answers/why-was-my-ssdi-denied)
- [How do I appeal an SSDI denial?](https://ssdidirectanswers.com/answers/how-do-i-appeal-an-ssdi-denial)
- [What is a Compassionate Allowance?](https://ssdidirectanswers.com/answers/what-is-a-compassionate-allowance)
## Topics
- SSDI Application Process — https://ssdidirectanswers.com/application-process
- SSDI Appeals — https://ssdidirectanswers.com/appeals
- SSA Blue Book — https://ssdidirectanswers.com/blue-book
- Compassionate Allowances — https://ssdidirectanswers.com/answers/what-is-a-compassionate-allowance

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Published: 2026-07-16T02:34:38.807417+00:00
Modified: 2026-07-16T02:34:38.807417+00:00
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Disclaimer: SSDI Direct Answers is a private informational website. It is not affiliated with the Social Security Administration or any government agency. Informational only — not legal, medical, or financial advice. For official information visit ssa.gov.