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Medical evidence needed for an SSDI application

SSA needs evidence that identifies your medically determinable condition and shows how it affects work-related functioning. Provider names, treatment dates and complete records help SSA request and evaluate the right evidence.

Written by Leigh Casher, Benefits Writer · Reviewed September 14, 2026

Start here: This guide explains general SSA rules. Check current requirements with Social Security for your own situation.

Identify every relevant medical source

List doctors, clinics, hospitals, therapists and testing facilities, including accurate addresses, phone numbers and treatment dates. Include sources for physical and mental conditions when both affect your ability to function.

Document diagnosis, treatment and response

Records may include examination findings, laboratory and imaging results, treatment history, medicines, side effects and response to care. A diagnosis is important, but SSA also evaluates the severity and functional effect of the condition.

Describe work-related limitations

Explain concrete limits such as how long you can sit, stand, walk, concentrate, use your hands, lift, interact with others or maintain attendance. Connect each limitation to medical evidence and describe frequency, duration and recovery time where relevant.

Keep evidence current and consistent

Update SSA when a provider, medicine or condition changes. Review forms for inconsistent dates or descriptions before returning them. SSA must make reasonable efforts to obtain medical reports, but applicants remain responsible for providing requested information and evidence.

Primary sources

Last reviewed September 14, 2026. How we research and update this content.