The main form is called the process for Disability Insurance Benefits

The form you fill out to start an SSDI claim is Form SSA-16, officially titled "process for Disability Insurance Benefits." This is the single form Social Security uses to begin processing your claim, whether you mail it in, bring it to an office, or file it online through their website.

You do not need to hunt for this form yourself. When you contact Social Security to start a claim—by phone at 1-800-772-1213, in person at your local office, or online at ssa.gov—they will either give you the form directly or walk you through the questions over the phone and create the process for you. Many people never see a physical form because Social Security staff fills it out as they talk to you.

The form asks for basic information: your name, date of birth, Social Security number, work history, and the date your condition began. It also asks you to describe how your condition limits your ability to work. This description matters because it becomes part of your medical record in the case.

Key Takeaways

  • Form SSA-16 is the official SSDI process, but you do not have to find it yourself—Social Security provides it or files it for you during your initial contact.
  • You can start your claim by phone, in person at a local Social Security office, or online at ssa.gov, and the method you choose does not change which form gets used.
  • After you submit the initial process, Social Security will request medical records and may send you additional forms to complete, depending on your condition and work history.
  • If you are denied and appeal, you will fill out different forms at each stage—Request for Reconsideration, then a hearing request form if you continue.

What happens after you submit Form SSA-16

Once Social Security receives your process, they send you a notice confirming they have it. They will then request your medical records from doctors, hospitals, and therapists you have seen. This can take several weeks because Social Security has to contact each provider separately.

Depending on your situation, Social Security may send you additional forms to fill out. If you worked recently, they might send Form SSA-3368, which asks detailed questions about your past work and what you did each day. If your condition involves mental health, they may send Form SSA-3969, a questionnaire about how your condition affects daily activities. These are not optional—Social Security needs this information to make a decision.

You will also receive a notice telling you to go to a medical exam arranged by Social Security. This is called a Consultative Examination, or CE. A doctor or psychologist hired by Social Security will examine you or review your records. This exam is free to you.

Forms you fill out if you are denied

If Social Security denies your claim, you have the right to appeal. Each stage of appeal uses a different form. The first appeal is called Reconsideration, and you file it using Form SSA-561, titled "Request for Reconsideration." You have 60 days from the date on your denial letter to file this form.

If Reconsideration is also denied, the next step is a hearing before an Administrative Law Judge. You request this hearing using Form HA-501, "Request for Hearing Before Administrative Law Judge." Again, you have 60 days from the Reconsideration denial letter. At this stage, many people hire a disability representative or attorney to help them prepare.

If you lose at the hearing level, you can appeal to the Appeals Council using Form HA-520. After that, federal court is the only remaining option, and you would work with an attorney rather than filling out Social Security forms.

Where to get the forms and how to submit them

You can read all Social Security forms from ssa.gov/forms. The site has a search tool where you can type the form number or name. You can also call 1-800-772-1213 and ask Social Security to mail you a form, or visit your local Social Security office in person.

For the initial process (Form SSA-16), you have three submission options: file online at ssa.gov/applyfordisability, mail the completed form to your local Social Security office, or bring it in person. Filing online is usually fastest because Social Security can begin processing when ready. If you mail it, keep a copy for your records and consider using certified mail so you have proof of delivery.

For appeal forms (SSA-561, HA-501, HA-520), you must file them at your local Social Security office or mail them to the address listed on your denial letter. You cannot file appeals online. Again, keep a copy and use certified mail if you mail the form.

What information Social Security needs from you

On the initial process, have these documents ready before you start: your Social Security card, birth certificate, proof of citizenship or legal residency (passport, green card, or state ID), and a list of all doctors and hospitals you have visited in the past year. You will also need to list any medications you take and describe your work history for the past 15 years, including job titles and dates.

If you have medical records at home—test results, imaging reports, letters from doctors—gather those too. You do not have to submit them with the process; Social Security will request them from your providers. But having them on hand helps you answer questions accurately about dates and diagnoses.

For appeal forms, you will need the case number from your denial letter and a clear explanation of why you disagree with Social Security's decision. If you have new medical evidence, include it with your appeal form.

Working with a representative to handle forms

You do not have to fill out forms yourself. You can authorize a family member, friend, attorney, or accredited disability representative to handle your case and submit forms on your behalf. If you choose this route, you will fill out Form SSA-1696, "Appointment of Representative," which tells Social Security who is authorized to act for you.

A disability representative or attorney can be especially helpful during appeals because they know how to present medical evidence and argue your case to an Administrative Law Judge. Social Security has a list of accredited representatives on their website, and many work on contingency, meaning they only get paid if you win your case.

Frequently Asked Questions

Can I start my SSDI claim without filling out a form?

Yes. You can call Social Security at 1-800-772-1213 or visit your local office, and a staff member will ask you the questions from Form SSA-16 over the phone. They will create your process without you ever holding a physical form. The information goes into the same system either way.

What if I do not have all my medical records when I explore?

You do not need them upfront. On the process, you list the doctors and hospitals you have seen, and Social Security requests the records for you. If you have records at home, you can mail them to Social Security after you explore, but it is not required to start the process.

Do I have to fill out the Consultative Examination form before the exam?

No. Social Security schedules the exam and sends you a notice with the date, time, and location. The doctor or psychologist who performs the exam will ask you questions and take notes. You do not fill out a form beforehand; the exam itself is the information Social Security needs.

What if I lose my denial letter and do not know the form number for my appeal?

Call Social Security at 1-800-772-1213 and give them your Social Security number. They can tell you which appeal stage you are at and send you the correct form. You can also visit your local office and ask staff to help you file the appeal in person.

Can I submit forms by email or fax?

Social Security does not accept initial applications by email or fax. You must file online, by mail, or in person. For appeals, some local offices may accept fax, but mailing or filing in person is more reliable. Call your local office to ask about fax before you try it.