Filed March 19, 2014
913(a). Accordingly, she cannot establish a medically determinable impairment, see 20 C.F.R. §§ 404.1513(a), 416.913(a), and her statement is not a medical source statement because “[m]edical source statements are medical opinions submitted by acceptable medical sources ... about an individual’s physical … abilities to perform work-related activities on a sustained basis.”