What the Disability Function Report asks and why your answers matter

The Disability Function Report (also called the Function Report or Form SSA-3373) is a document Social Security sends you after you file for SSDI. It asks detailed questions about what you can and cannot do in daily life — not medical facts, but what actually happens when you try to work, cook, shower, or leave your house.

Your answers go directly to the person deciding your case. They read your medical records, then they read this form to see whether those records match what you say your body or mind can do. If your answers are vague or don't line up with the medical evidence, the decision-maker may assume you can do more than you actually can. A disability lawyer often reviews your answers before you send them in, because the difference between "I have difficulty walking" and "I can walk 50 feet before my legs give out and I need to sit for 20 minutes" can determine whether you are approved.

This form has no "right" answers — only honest ones. The examples below show how to turn what actually happens to you into the specific language Social Security understands.

Key Takeaways

  • The Disability Function Report asks what you can do in daily life, not what your diagnosis is, so answer by describing what actually happens when you try a task.
  • Social Security wants specific detail: not "I have pain" but "I can stand for 10 minutes before pain forces me to sit down."
  • Your answers should match your medical records — if your doctor's notes say you have severe fatigue, your form should explain how that fatigue stops you from working.
  • A disability lawyer can review your draft answers before you submit them to catch vague language or gaps that might hurt your case.

How to describe what you can do with your hands and arms

Social Security asks whether you can reach, grasp, handle objects, and do fine motor tasks. The form gives examples like buttoning, writing, and picking up small items. The mistake most people make is answering yes or no. Instead, describe what happens when you try.

Weak answer: "I have trouble with my hands."

Better answer: "I can button large buttons on a shirt, but small buttons take me 5 to 10 minutes each because my fingers don't grip well. I cannot fasten snaps or zippers. Writing by hand causes pain in my wrist after 2 to 3 minutes, so I print instead of write cursive. I drop things frequently — plates, cups, utensils — because my grip strength is weak."

The second answer tells the decision-maker exactly which tasks are affected and how much time or pain each one costs you. If your medical records mention arthritis or nerve damage, this answer proves the diagnosis has real consequences.

How to describe walking, standing, and moving around

Social Security wants to know how far you can walk, how long you can stand, and whether you need a cane, walker, or other aid. Again, be specific about distance and time, not just "I have trouble walking."

Weak answer: "I cannot walk very far."

Better answer: "I can walk about 100 feet before my knees hurt too much to continue. I then need to sit down for at least 15 minutes before the pain lessens enough to walk again. I use a cane because without it I feel unsteady. I cannot stand still for more than 5 minutes — I have to shift my weight or sit down. I cannot climb stairs; I use the elevator or ask someone to help me."

This answer shows the decision-maker that your walking is limited not just by distance but by pain, that you need equipment, and that you cannot do tasks that require standing or climbing. If your medical records mention knee arthritis or balance problems, this answer connects the diagnosis to real-world impact.

How to describe mental or emotional limits

If you have depression, anxiety, PTSD, or another mental health condition, Social Security asks how it affects your ability to be around people, follow instructions, handle stress, and manage your own care. These questions are often the hardest to answer because the limits are less visible than a broken leg.

Weak answer: "I have anxiety and depression."

Better answer: "I have severe anxiety in public places. I avoid grocery stores and restaurants because I feel like people are watching me and I might have a panic attack. When I do go out, I have to leave quickly if I feel anxious. I have trouble sleeping — I usually get 3 to 4 hours a night — which makes me irritable and unable to concentrate the next day. I cannot work around other people because I get overwhelmed and angry. I have called in sick to jobs multiple times because I could not face going in. I take medication for depression, but it helps only a little. I cry without warning and feel hopeless most days."

This answer shows specific situations that trigger your symptoms, how often symptoms happen, what you do to cope, and how the condition affects your ability to show up and function at a job. If your medical records mention panic attacks or medication adjustments, this answer proves the condition is real and ongoing.

How to describe fatigue and concentration problems

Fatigue and trouble concentrating are common in many conditions — fibromyalgia, ME/CFS, long COVID, depression, multiple sclerosis — but they are hard to prove because they are invisible. Social Security wants to know how fatigue affects your daily schedule and whether you can focus on tasks.

Weak answer: "I am very tired all the time."

Better answer: "I wake up already exhausted, even after 8 hours of sleep. By mid-morning, I have to lie down for 1 to 2 hours or I cannot function. After I rest, I have maybe 2 to 3 hours of energy before I crash again. On bad days, I stay in bed all day. I cannot plan anything because I never know if I will have energy. I cannot read more than a few pages before I lose focus and have to re-read the same paragraph. I forget what I was doing mid-task. I cannot watch TV for more than 20 minutes without my mind going blank. I have tried to work part-time, but by day 3 I am too exhausted to get out of bed."

This answer shows the pattern of your fatigue (when it hits, how long it lasts, what triggers it), how it disrupts your day, and how it has affected your attempts to work. It also shows cognitive effects — the concentration problems — which are separate from the fatigue itself.

How to describe pain and how it stops you from working

Pain is one of the most common reasons people file for SSDI, but Social Security needs to know not just that you have pain, but what you cannot do because of it. The form asks about pain during daily activities and whether pain medication helps.

Weak answer: "I have chronic pain."

Better answer: "I have pain in my lower back and both knees that is usually 6 to 7 out of 10. It gets worse when I sit for more than 30 minutes or stand for more than 10 minutes. I cannot bend down to pick things up — I have to ask for help or leave them. I cannot carry groceries or laundry. I take opioid medication three times a day, which helps the pain drop to a 4 or 5, but it also makes me drowsy and unable to concentrate. Even with medication, I cannot work because I would need to change positions every 15 to 20 minutes, and no employer would allow that. I have tried to work desk jobs, but the pain and medication side effects make it impossible to focus."

This answer tells the decision-maker the pain level, what positions make it worse, what you cannot do, what medication you take, whether the medication helps, and what side effects the medication causes. It also explains why you cannot work — not just that pain stops you, but that the accommodation you would need (frequent position changes) is not realistic in a job.

What to do with your answers before you send them in

After you fill out the form, read it once for typos and clarity. Then, if you have a disability lawyer or are considering one, send your draft answers to them. A lawyer can spot vague language, gaps between your answers and your medical records, or places where you undersold your limitations.

You can also ask your doctor to review your answers. If your doctor disagrees with something you wrote, ask them to explain why — their input might help you describe the situation more accurately. Do not change your answers to match what you think Social Security wants to hear; change them only if you realize you described something inaccurately.

Once you are confident your answers are honest and specific, mail or submit the form by the important date Social Security gives you. Late submissions can delay your case or result in a denial.

Frequently Asked Questions

Should I exaggerate my limitations to make my case stronger?

No. Social Security compares your form answers to your medical records and any in-person exam. If you say you cannot walk at all but your doctor's notes say you walked into the office, the decision-maker will assume you are not being truthful about other things too. Stick to what actually happens to you.

What if my condition changes between when I fill out the form and when Social Security makes a decision?

Tell Social Security in writing. Send a letter explaining what changed, when it changed, and how it affects your ability to work. Include any new medical records that document the change. Do not wait until the decision comes in.

Can I attach extra pages if the form does not give me enough space?

Yes. If a question needs more detail than the form allows, write "See attached" and include numbered pages with your full answer. Make sure your name and Social Security number are on every page you attach.

What if I cannot remember exactly how long I can walk or stand?

Give your best estimate based on what usually happens. If you are not sure, say so: "I can usually walk about 10 to 15 minutes, but on bad days it might be only 5 minutes." Honesty about uncertainty is better than a made-up number.

Should I mention that a disability lawyer is helping me with this form?

You do not have to mention it on the form itself. However, if you hire a lawyer, you will sign a form (SSA-1696) that tells Social Security the lawyer represents you. That form goes in separately from the Function Report.