How to Fill Out the Social Security Disability Application (Step-by-Step Guide)
How to Fill Out the Social Security Disability Application (Step-by-Step Guide)

Filing for Social Security Disability can feel overwhelming — especially if you're sick, injured, or unable to work. But if you’re applying for SSDI (Social Security Disability Insurance) or SSI (Supplemental Security Income) in 2025, this step-by-step guide will walk you through the process.
At Crossroads Disability, we help people like you file and win disability claims every day — and we’re here to make the process as smooth and stress-free as possible.
Step 1: Decide How You’ll Apply
You can apply:
- Online via the SSA website (ssa.gov)
- By phone: 1-800-772-1213
- In person at your local Social Security office
Applying online is often the fastest and most convenient option, but it can still be confusing — especially if you’re not sure what to say.
Step 2: Gather the Right Information
To complete the application, you’ll need:
- Your Social Security number
- Information about your medical conditions
- Names and contact info for all doctors and clinics
- List of all medications you take
- Work history for the past several years
- Details about education, training, and skills
- Any documents related to workers’ comp, military service, or long-term disability
Pro tip: Get medical records organized before applying — SSA won’t automatically collect everything.
Step 3: Understand the Main Forms
SSA will ask you to complete several key forms:
SSA-16: Application for SSDI
- Your personal info, work history, and dates you stopped working
- Any benefits you’re currently receiving
SSA-3368: Adult Disability Report
- The heart of your case — describes your conditions and how they affect your ability to work
- Requires details about doctors, symptoms, treatments, and daily limitations
SSA-827: Medical Release Form
- Authorizes SSA to request records from your healthcare providers
Step 4: Avoid Common Mistakes That Can Cause Denials
Most people are denied at the initial application stage — but many denials are preventable. Watch out for these common pitfalls:
- Failing to list all conditions
- Leaving out medical providers or hospitals
- Describing symptoms vaguely
- Not explaining how your condition impacts daily functioning or work
- Applying while still working full-time
SSA doesn't just look at what conditions you have — they care how those conditions limit your ability to work full-time.
Step 5: Consider Getting Legal Help from the Start
You are allowed to apply on your own, but working with an experienced disability lawyer can make a big difference. At Crossroads Disability, we:
- Help you gather and organize medical evidence
- Fill out your application for you
- Submit all forms correctly and on time
- Follow up with SSA so you don’t have to
And — you don’t pay us anything unless we win your case.
Step 6: Know What Happens After You Apply
Once SSA receives your application:
- A Disability Determination Services (DDS) office reviews it
- They may request more info or schedule a consultative exam
- You’ll receive a written decision in 3 to 6 months (on average)
If denied, you have 60 days to appeal — and we can help with that too.
Bonus: What If You Can’t Finish the Application?
If you start applying online and get stuck, don’t worry. You can save your progress and call us to help you finish — we’ll take it from there.
๐ Need Help Applying for SSDI or SSI?
At Crossroads Disability, we help clients across the country file strong, complete disability claims — and win.
- ๐ Free case evaluation
- ๐งพ We handle the paperwork
- ๐ฐ No fee unless you win
Don’t risk a denial by going it alone. Contact us today to start your claim the right way.