The 12-Month Durational Requirement for SSDI
TL;DR: Your condition must have lasted or be expected to last at least 12 continuous months or result in death. The clock starts at onset, not diagnosis. Temporary severe conditions don't qualify. The SSA may deny claims for conditions they believe will improve within 12 months, even if you're currently unable to work. Multiple sequential conditions can meet the requirement if disability is continuous.
The 12-month requirement is the SSA's way of ensuring SSDI covers long-term disability, not temporary illness or injury. Even if you're completely unable to work today, the SSA can deny you if they believe you'll recover within a year.
How the SSA Evaluates Duration
The SSA looks at your medical evidence to determine whether your condition has lasted or will last 12 months. They consider the nature of the condition, treatment response, and medical opinions about expected recovery.
Conditions That Often Trip the Duration Rule
- Fractures expected to heal (even complex ones)
- Cancer in remission after treatment
- Surgery with expected full recovery
- Acute mental health episodes expected to resolve
How to Prove Duration
- Medical records spanning 12+ months showing persistent symptoms
- Failed treatments showing the condition is resistant to improvement
- Doctor's opinion that the condition is expected to last 12+ months
- Progressive disease documentation showing worsening over time
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