The Two Things Social Security Actually Checks

Social Security looks at exactly two things to decide whether you meet SSDI's rules: whether you have enough work credits from jobs where you paid Social Security tax, and whether you have a medical condition that meets their definition of disability. You do not need both to be perfect—you need both to be true. If you are missing either one, you will not be found to meet the rules, no matter how strong the other is.

Work credits are the easier part to verify yourself. Medical may be able to access is harder because Social Security's definition of disability is narrow and specific. This section walks you through how to check both.

Key Takeaways

  • You need a minimum number of work credits (usually 40, with at least 20 earned in the last 10 years) and you can check your exact count on your Social Security account or by requesting a Statement of Earnings.
  • Social Security's medical definition requires that your condition prevent you from doing any substantial work for at least 12 months or result in death, which is stricter than most people's understanding of disability.
  • You can review your medical records yourself against Social Security's Blue Book listings to get a sense of whether your condition might meet their threshold, but Social Security's doctors make the final call.
  • Age matters: if you are under 22, you may meet the rules through a parent's work record instead of your own, and the medical standard is the same.
  • The only way to know for certain is to file a claim; Social Security will tell you in writing whether you meet the rules and, if not, which part you are missing.

How to Check Your Work Credits

Every dollar you earn in a job where your employer withholds Social Security tax (FICA) counts toward work credits. In 2024, you earn one credit for every $1,730 in wages, up to a maximum of four credits per year. You can see your exact credit count by logging into your my Social Security account at ssa.gov and viewing your Statement of Earnings, or by calling Social Security at 1-800-772-1213 and asking them to mail you one.

The Statement of Earnings shows your work history year by year and the credits you earned each year. It also shows any years where Social Security has no record of your earnings—which can happen if you worked under the table, if your employer did not report correctly, or if there was a clerical error. If you see missing years, you can ask Social Security to investigate, though you will need to provide your own evidence (pay stubs, tax returns, W-2s) to correct the record.

For SSDI, you typically need 40 work credits total, with at least 20 of them earned in the 10 years before you became disabled. If you became disabled before age 24, the rules are looser—you may need as few as 6 credits, with half earned in the 3 years before disability began. Check your Statement of Earnings against these thresholds to see whether you meet the work credit part of the rules.

Understanding Social Security's Medical Definition of Disability

Social Security's definition of disability is not the same as your state's workers' compensation definition, your employer's definition, or the definition used by the Department of Veterans Affairs. Social Security says you are disabled if you have a medical condition that prevents you from doing any substantial work for at least 12 months or will result in death. "Substantial work" means earning more than a certain monthly amount—in 2024, that is $1,550 per month, though the figure changes yearly.

This definition is stricter than most people expect. You cannot meet it by being unable to do your old job; Social Security looks at whether you can do any job that exists in the economy, considering your age, education, and work history. A 55-year-old with a high school diploma who cannot work as a carpenter might still be found able to do sedentary office work, even if no such job is available to them right now. Social Security's doctors and vocational experts make this judgment, not your own doctor.

The condition must also be expected to last at least 12 months or be terminal. A broken leg that will heal in 8 weeks does not meet the rules. A condition expected to improve significantly within a year does not meet the rules. The 12-month threshold is strict.

How to Review Your Condition Against Social Security's Standards

Social Security publishes the Blue Book, a listing of medical conditions that, if they meet certain severity criteria, are considered to meet the definition of disability. The Blue Book is organized by body system—musculoskeletal, respiratory, cardiovascular, neurological, and so on. You can search it at ssa.gov/disability/bluebook or ask Social Security to mail you a copy.

If your condition is listed in the Blue Book and you meet the specific medical criteria for that listing (which usually involve test results, imaging, or clinical findings), Social Security will find you meet the medical rules without needing to assess your ability to work. If your condition is not listed, or if you have the condition but do not meet the severity criteria in the listing, Social Security will do a more detailed assessment of your ability to work.

You can review your own medical records against the Blue Book listings to get a sense of whether your case might be strong, but this is not a substitute for Social Security's review. Social Security's doctors will request your medical records directly from your providers, order additional tests if they think they need them, and make the final information. Your own review can help you understand what evidence matters, but it cannot predict what Social Security will decide.

What Happens If You Do Not Meet the Work Credit Requirement

If you do not have enough work credits, you cannot receive SSDI, period. Social Security will send you a notice saying you do not meet the insured status requirement. There is no exception, no appeal that can override this, and no way to make up credits retroactively. If you are close to having enough credits (for example, you need 40 and have 38), you might be able to work a few more months to earn the remaining credits, but only if you are not yet disabled or if your disability began recently enough that you can still work.

If you do not have enough credits but you are age 62 or older, you may be able to receive Social Security retirement benefits instead, which have a different (usually lower) credit requirement. If you are under 62 and do not have enough SSDI credits, you have no Social Security option unless you are the spouse or child of someone who is receiving or is may have access to to Social Security benefits.

What Happens If You Do Not Meet the Medical Requirement

If Social Security finds that your condition does not meet their definition of disability, they will send you a notice explaining which part of the medical standard you did not meet. Common reasons for denial include: the condition is not severe enough, the condition is expected to improve within 12 months, you can still do some kind of work, or your medical records do not support the severity you reported.

You can request reconsideration, which means Social Security will review your case again, usually with a different examiner. You can also request a hearing before an administrative law judge if reconsideration is denied. At a hearing, you can present new medical evidence, have your doctor testify, and argue why you believe you meet the rules. Many people are approved at the hearing stage after being denied initially, so this step matters.

If you are denied and you believe the decision is wrong, gather any new medical evidence (recent test results, updated doctor's notes, records from specialists you have seen since you filed) and submit it with your reconsideration request. The more specific and recent your medical evidence, the stronger your case.

Age and Family Circumstances That Change the Rules

If you are under age 22 and your parent is receiving or is may have access to to Social Security retirement or disability benefits, you may be able to receive benefits on their work record instead of needing your own. You still have to meet Social Security's medical definition of disability, but you do not need your own work credits. This is called disabled adult child (DAC) benefits.

If you are married and your spouse is receiving or is may have access to to Social Security benefits, your spouse's work record does not help you get SSDI—SSDI is based only on your own work record. However, if you are approved for SSDI, your spouse and children may be able to receive benefits on your record once you are receiving benefits.

The Only Way to Know for Certain

You can estimate whether you meet the work credit requirement by checking your Statement of Earnings. You can review your medical condition against the Blue Book to see whether it might meet Social Security's standards. But the only way to know for certain whether you meet both requirements is to file a claim. Social Security will request your medical records, have their doctors review them, and send you a written decision that explains whether you meet the rules and, if not, which part you are missing.

If you are denied, that decision is not final—you have the right to request reconsideration and, if that is denied, to request a hearing. Many people are approved after a hearing, especially if they submit new medical evidence or have a representative help them present their case.

Frequently Asked Questions

Can I check if I meet the medical requirement before I file?

You can review your condition against the Blue Book listings to see whether it might meet Social Security's standards, but Social Security's doctors make the final call. The only way to know for certain is to file a claim and let Social Security review your medical records. If you are denied, you can request reconsideration or a hearing.

What if I worked but my employer did not report my earnings to Social Security?

You can ask Social Security to investigate and correct your earnings record. You will need to provide your own evidence—pay stubs, tax returns, W-2s, or a letter from your former employer. This can take several months, so start the process as soon as you notice the missing earnings.

Do I need a doctor's letter saying I am disabled to meet the rules?

No. Social Security's doctors review your medical records and make the information themselves. Your own doctor's opinion matters and should be included in your medical records, but Social Security does not require a specific letter or form from your doctor saying you are disabled.

If I am denied, can I appeal and try again?

Yes. You can request reconsideration (Social Security reviews the case again), and if that is denied, you can request a hearing before an administrative law judge. You have 60 days from the date of each denial notice to request the next step. Many people are approved at the hearing stage, especially if they submit new medical evidence.

What if I am close to having enough work credits but not quite there yet?

If you can still work and have not yet become disabled, you can continue working to earn the remaining credits you need. Once you have 40 credits (or the number required for your age), you will have met the work credit requirement. However, if you are already disabled, you cannot earn new credits because you cannot work.