What you have to prove
Show: (1) imaging-confirmed lumbar spinal stenosis resulting in compromise of the cauda equina; (2) symptoms including nonradicular neurological signs; (3) findings on exam of muscle weakness, sensory changes, or abnormal reflexes; and (4) a documented need for a walker, bilateral canes, bilateral crutches, or a wheelchair to ambulate.
Medical evidence SSA expects
MRI or CT imaging of the lumbar spine, EMG, neurological exam findings, gait analysis, and physician prescription for an assistive device.
Common misconceptions
Many lumbar stenosis patients can still walk short distances — the listing specifically requires inability to ambulate effectively without bilateral support. Unilateral cane users usually don't meet it.