 This is a research study of an interdisciplinary pain management program for U.S. military veterans who served during the post-911 combat eras e.g., Operations Iraqi Freedom OIF, Enduring Freedom OEF, New Dawn OND presenting with chronic musculoskeletal pain related to military service with comorbid depression andor posttraumatic stress disorder PTSD symptoms andor mild traumatic brain injury. This study will test the efficacy of an interdisciplinary pain program compared to treatment as usual in the Veterans Health Administration on pain-related disability, opioid medication use, and pain coping. 