1. Lack of Sufficient Medical Evidence

One of the biggest reasons SSDI claims are denied is insufficient medical documentation. The Social Security Administration (SSA) needs clear proof that your condition:

• Meets their definition of disability
• Has lasted or is expected to last at least 12 months
• Prevents you from performing substantial work

If your medical records are incomplete, outdated, or don’t fully explain your limitations, your claim could be denied.

2. Working Above the SGA Limit

If you earn more than the Substantial Gainful Activity (SGA) limit — $1,550 per month for non-blind applicants in 2025 — the SSA may determine you are able to work, even if your hours are limited.

3. Failure to Follow Prescribed Treatment

If you are not following your doctor’s treatment plan without a valid reason, the SSA might deny your claim. They assume that following treatment could improve your ability to work.

4. Prior Denials Without New Evidence

Resubmitting an SSDI application without adding new medical evidence or addressing the reason for your previous denial often results in the same outcome.

5. Condition Not Considered Severe Enough

The SSA will deny a claim if they determine that your medical condition does not significantly limit your ability to work for at least 12 months. Minor or temporary health issues typically don’t qualify.

6. Lack of Work Credits

SSDI requires you to have earned enough work credits through jobs covered by Social Security. If you haven’t worked long enough or recently enough, your claim may be denied regardless of your medical situation.