Social Security Disability Insurance has 2 separate requirements - enough recent work credits, and a medical condition severe enough to meet the government's definition of disability. This screener walks through both so you know where you actually stand before you apply.
Most initial SSDI applications are denied, often on technical grounds that a stronger application could avoid. A disability advocate reviews your work history and medical record at no cost.
SSDI has 2 completely separate requirements, and you need to clear both. The first is a work credit test - you need enough recent work history paying into Social Security, generally 20 credits in the last 10 years for most adults, though the exact number depends on your age. The second is a medical test - your condition must prevent "substantial gainful activity" and be expected to last at least 12 months or result in death.
Many applicants clear one hurdle but not the other, which is why so many initial claims get denied. If your condition stems from a workplace accident, a workers comp claim may run alongside your SSDI application. And if you're initially denied, don't assume that's the final word - a denial appeal succeeds far more often than a first application.
The Social Security Administration maintains a list of impairments, sometimes called the "Blue Book," that automatically qualify if you meet the specific criteria listed. Conditions not on the list can still qualify through a "medical-vocational allowance," which looks at whether your condition and age, education, and work experience combine to prevent you from doing any job that exists in significant numbers in the economy.
Incomplete medical records are the leading cause of denial - the SSA needs objective medical evidence, not just your description of symptoms. Missing work credit requirements, failing to follow prescribed treatment, and earning above the substantial gainful activity threshold while applying are other common reasons. Many denials happen for administrative reasons that a stronger initial application could have avoided entirely.
Initial decisions typically take 3 to 6 months. If denied, you have 60 days to request reconsideration, then a hearing before an administrative law judge if reconsideration also fails. Applicants who bring a representative to the hearing stage are approved at meaningfully higher rates than those who go it alone, since a strong hearing presentation matters as much as the underlying medical facts.