"At this point, the back injury is not requiring surgery," Rivers told KGB-FM radio, via ESPN.com. "We'll kind of revisit it in a month or so. But everything is improving. I'm back to my regular workouts and running around. ... I'm actually on the up and up. So I'm pretty excited."
The injury was severe enough that Rivers considered shutting down his season in December, NFL Media Insider Ian Rapoport reported at the time.
Once the Chargers' medical staff is confident that the injury is behind Rivers, the organization will work to ensure the 33-year-old's future in San Diego.
Due to reach free agency after the 2015 season, Rivers is a candidate for a contract extension in the coming months.
As long as Rivers is fully healthy, he deserves a paycheck commensurate with his status as one of the NFL's top half-dozen quarterbacks.