Pugh, who has missed five games with a back ailment, met with Dr. Robert Watkins of the Watkins Spine Group in California to seek a second opinion.
The 27-year-old was prescribed rest and rehab and will avoid surgery, although that diagnosis won't prevent him from landing on injured reserve for the first time in his career.
Pugh has started all 63 games in which he has appeared since being selected with the 19th-overall pick of the 2013 draft.
The 6-foot-5 Pugh will join center Weston Richburg and guard D.J. Fluker in being unrestricted free agents this offseason.