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

Anthony Tanoos • June 25, 2025

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

A person is writing on a piece of paper with a pen.

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:

  1. A Disability Determination Services (DDS) office reviews it
  2. They may request more info or schedule a consultative exam
  3. 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.


📞 Need Help Applying for SSDI or SSI?

At Crossroads Disability, we help clients across the country file strong, complete disability claims — and win.

  • 📞 Free case evaluation
  • 🧾 We handle the paperwork
  • 💰 No fee unless you win


Don’t risk a denial by going it alone. Contact us today to start your claim the right way.

👉 Request Your Free Evaluation

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