Smith wasn't present at the portion of Wednesday's practice that was open to the media, Jim Wyatt of the Titans' official site reports.
During the Titans' Week 12 win over the Colts, Smith handled a normal 75-percent snap share, and he didn't appear to be injured at any point during the contest. The Titans' first official injury report of Week 13 will be released later Wednesday, at which point more information about Smith's situation will be known.