1. Personal Identification Documents

To verify your identity, the Social Security Administration (SSA) will require:

• Social Security number
• Birth certificate or other proof of birth
• If applicable: Proof of U.S. citizenship or lawful alien status

Make sure your name matches across all documents to avoid processing issues.

2. Medical Evidence and Records

SSA bases your SSDI eligibility heavily on medical documentation. You will need:

• Detailed medical records from doctors, hospitals, clinics, and specialists
• Lab results, imaging reports (X-rays, MRIs, CT scans, etc.)
• Diagnosis letters and progress notes from treating physicians
• Medication history and treatment plans
• Physician statements describing your limitations and inability to work

The more complete and up-to-date your medical records are, the better your chances of approval.

3. Work History Documentation

SSDI is based on your work record, so be ready to provide:

• A list of all jobs you've held in the last 15 years
• Dates of employment and job titles
• A detailed description of the work duties for each position
• Recent W-2 forms or self-employment tax records

This information helps SSA determine whether you can return to past work or adjust to new work.

4. Income and Resource Information (If Applying for SSI Too)

If you are also applying for Supplemental Security Income (SSI) along with SSDI, you'll need to show:

• Bank statements
• Property records
• Information about any investments or other income

While SSDI focuses on work credits, SSI is need-based, so financial documents are necessary.

5. Adult Disability Report (SSA-3368)

You will need to complete and submit this form, which includes:

• Your medical history
• Treatment sources
• Work activity
• How your condition impacts daily living and job tasks

This report is a core part of the application and must be filled out carefully and completely.