The Two Things Social Security Checks First

Social Security Disability Insurance (SSDI) requires you to meet two separate conditions at the same time: you must have earned enough work credits through payroll taxes, and you must have a medical condition that prevents you from working for at least 12 months or results in death. If you fail either test, you do not receive SSDI, regardless of how well you meet the other. This guide explains what Social Security actually looks for when it reviews your case.

Work credits are not the same as years worked. You earn one credit for every $1,680 you earn in a year (this dollar amount changes annually). You can earn a maximum of four credits per year. Most people need 40 credits total, with at least 20 of those earned in the 10 years before you became disabled. Younger workers have lower requirements. The exact number depends on your age when your disability began.

The medical part is where most denials happen. Social Security does not take your word that you cannot work. It reviews your medical records, test results, and treatment history. It may also send you to a doctor it pays to examine you. Your condition must be severe enough that it prevents you from doing any work that exists in the national economy, not just your old job.

Key Takeaways

  • You need 40 work credits total, with at least 20 earned in the 10 years before you became disabled, though younger workers need fewer credits.
  • Work credits come from payroll taxes on wages or self-employment income, and you earn one credit for every $1,680 you earn in a calendar year.
  • Your medical condition must prevent you from doing any substantial work for at least 12 months or result in death; Social Security will review your medical records and may order an independent examination.
  • You can check your work credit record by creating a my Social Security account online or by calling Social Security at 1-800-772-1213.

How Work Credits Are Counted

Work credits accumulate from wages you earned and had Social Security taxes withheld, or from self-employment income on which you paid self-employment tax. Each calendar year, you earn one credit for each $1,680 you earn, up to four credits maximum per year. The dollar threshold ($1,680 in 2024) increases each year based on national wage averages, so the amount changes annually.

If you worked part-time or had gaps in employment, you still earn credits for the years you did work. A year with $6,720 in earnings gives you four credits. A year with $840 gives you one credit. A year with no earnings gives you zero credits. Social Security adds them up across your entire work history.

You can see your work credit record by logging into your my Social Security account at ssa.gov, or by calling 1-800-772-1213 and asking for a Social Security Statement. The statement shows how many credits you have earned and in which years. If you see an error—a job you worked that is not listed, or earnings that seem wrong—you can request a correction, though you must do so within three years, three months, and 15 days of the year the earnings were reported.

Age-Based Credit Requirements

The 40-credit rule applies to people who became disabled at age 31 or older. If you became disabled before age 31, you need fewer credits. At age 24, you need only 12 credits (three years of work). At age 22, you need 12 credits. At age 20, you need 8 credits (two years of work). At age 19, you need 6 credits. At age 18, you need 6 credits.

For all age groups except those 31 and older, Social Security also requires that you have earned at least half your required credits in the three years when ready before you became disabled. If you are 26 years old and became disabled, you need 12 credits total, with at least 6 of those earned in the three years before disability began.

There is one exception: if you became disabled before age 22, you need only 6 credits total, with no requirement that they be recent. This rule exists because young people may not have had time to build a long work history.

What Social Security Considers a Medical Condition

Social Security maintains a list called the Blue Book that describes conditions it recognizes as disabling. The list includes arthritis, cancer, cerebral palsy, cystic fibrosis, diabetes, heart disease, HIV/AIDS, multiple sclerosis, muscular dystrophy, and many others. However, being on the list does not automatically mean you receive SSDI. Social Security still reviews your medical records to confirm the condition is as severe as the Blue Book describes.

If your condition is not on the Blue Book, you can still receive SSDI if your medical records show it is equally severe. Social Security compares your condition to similar conditions on the list. For example, if you have a rare form of arthritis not specifically named in the Blue Book, Social Security may compare it to the arthritis listing and decide whether your case is equally severe.

Severity means your condition significantly limits your ability to function. Social Security looks at how well you can walk, sit, stand, lift, carry, see, hear, remember, concentrate, and interact with others. It also considers pain, fatigue, and side effects from medication. The condition must be documented in medical records—imaging, lab work, doctor's notes, or hospital discharge summaries. Statements from you alone are not enough.

The 12-Month Duration Requirement

Your condition must either prevent you from working for at least 12 consecutive months, or it must be expected to result in death. Social Security does not award SSDI for temporary disabilities. If you have a broken leg that will heal in eight weeks, you do not meet this requirement, even if you cannot work during those eight weeks.

The 12 months does not have to be behind you when you explore. Social Security can find you disabled based on medical evidence that your condition will last at least 12 months. However, you must have medical records showing the condition started, and a doctor's statement or medical records indicating how long the condition is expected to last. If your condition has already lasted 12 months, that is stronger evidence.

Some conditions are presumed to last 12 months or more—for example, total blindness, amputation of a limb, or terminal cancer. For these conditions, Social Security does not require you to wait or prove duration. For other conditions, you may need to wait several months into your disability before you have enough medical evidence to show it will last 12 months.

What Happens During the Medical Review

When you submit your SSDI case, Social Security sends your medical records to a state agency called Disability information Services (DDS). A disability examiner at DDS reviews your records and may request additional records from your doctors. The examiner may also order a consultative examination—a medical exam paid for by Social Security, performed by a doctor or psychologist you have not seen before.

The consultative exam is not a second opinion on your diagnosis. It is a way for Social Security to gather missing information. If your medical records do not show recent test results, imaging, or a mental status exam, Social Security may order one. The exam is usually brief and focused on the specific gaps in your file.

After the examiner reviews all records, including any consultative exam, they write a decision. If they find you disabled, your case goes to a medical or psychological consultant at DDS who reviews the examiner's work. If they find you not disabled, you receive a denial letter explaining why. You then have the right to appeal.

Substantial Gainful Activity and Work Capacity

Social Security defines substantial gainful activity as work that earns you more than a set monthly amount. In 2024, that amount is $1,550 per month (or $2,590 if you are blind). If you are currently earning more than this amount, Social Security will likely deny your case, because earning this much suggests you can work.

However, the earnings test is not the only factor. Social Security also looks at whether you can do any work that exists in the national economy, regardless of whether a job is available near you or whether an employer would hire you. If you have severe arthritis in both hands, Social Security considers whether you could do sedentary work like data entry or phone work, even if you have never done those jobs. If your medical records show you cannot sit for more than 30 minutes at a time, you cannot do sedentary work, and Social Security must look at whether any other work is possible.

Your age, education, and work history matter in this analysis. A 58-year-old with a high school education who has always done manual labor is more likely to be found disabled than a 35-year-old with a college degree, if both have the same medical condition. This is because the older worker has fewer options to retrain for different work.

Frequently Asked Questions

Can I get SSDI if I have not worked in several years?

Only if you earned enough credits before you stopped working. If you earned 40 credits by age 30 and became disabled at age 50, you still meet the credit requirement even though you have not worked in 20 years. However, if you earned only 20 credits by age 40 and became disabled at age 45, you do not have enough credits, and you cannot receive SSDI no matter how severe your condition is.

What if my medical condition is getting worse but has not lasted 12 months yet?

You can explore now. Social Security will review your medical records and your doctor's statement about how long the condition is expected to last. If the evidence shows your condition will prevent you from working for at least 12 months, you can be found disabled even if it has only lasted a few months so far. However, the stronger your medical evidence of future duration, the better your chances.

Do I have to see a Social Security doctor, or can I use my own doctor's records?

Social Security prefers to use your own medical records. If your records are complete and recent, Social Security may not order a consultative exam. However, if your records have gaps—no imaging in two years, no recent mental health treatment, no recent lab work—Social Security may order an exam to fill those gaps. You cannot refuse a consultative exam without risking denial of your case.

If I was denied once, can I reapply with the same medical condition?

Yes, but only if your condition has worsened or if you have new medical evidence. If Social Security denied you because your medical records were incomplete, gathering more recent records and reapplying makes sense. If Social Security denied you because your condition did not meet the severity standard, reapplying with the same records will likely result in the same denial. You are better off appealing the original decision.

What counts as work for the work credit requirement?

Only work on which you paid Social Security taxes counts toward work credits. This includes W-2 wages and self-employment income. Work you did without reporting it to the IRS, work as a household employee that was not reported, and work in other countries generally does not count. If you worked but your employer did not withhold or report Social Security taxes, you may be able to correct the record if you have pay stubs or other proof of earnings.