Buprenorphine/naloxone (Suboxone) in its tablet/film form is currently used off-label for chronic pain. There is a patch form called Butrans that has been FDA approved for chronic pain. However, most medications prescribed by doctors in the United States are used "off label" (aka - for a purpose other than their FDA approval). Doctors are more and more frequently prescribing Suboxone for chronic pain, with or without a concurrent diagnosis of substance use disorder.
This means that many patients who do NOT use opioid medications are using Suboxone for their pain, because it is in many ways a safer long-term alternative to opioids.