"No," Martin said when asked Tuesday during his weekly radio show on 620 WDAE in Tampa if the injury was season-ending. "Right now, I'm doing treatment on it with the trainers and taking it day by day and seeing how it feels."
He will, however, miss Thursday night's game against the Carolina Panthers, the team announced Wednesday.
Martin suffered the injury in Sunday's loss to the Atlanta Falcons while attempting to catch a pass in the third quarter.
A league source told ESPN NFL Insider Adam Schefter on Monday that the Bucs believed Martin suffered a torn labrum in his shoulder, an injury that could end his season. But coach Greg Schiano refuted that report later Monday, stating the injury was not season-ending.
Martin echoed Schiano's statement during Tuesday's radio interview, saying he's been rehabbing the injury and already has seen some improvement.
"It's definitely gotten better," Martin said. "And my range of motion has increased day to day."
Rookie Mike James took over for Martin against the Falcons and will start Thursday night against Carolina.
One of the NFL's top rookies last season, Martin was off to a slow start this year for the winless Buccaneers (0-6). He has 456 yards on 127 carries -- an average of just 3.6 yards per attempt -- and one touchdown.