Co-occurring chronic pain and posttraumatic stress disorder (PTSD) affects between 4%-8% of the U.S. veteran population. A large body of research has documented the psychosocial burden of the co-occurrence, but fewer studies have examined physical health conditions and functioning. The current study aimed to address this gap by examining physical health conditions and functioning of co-occurring chronic pain and PTSD. Data were analyzed from the National Health and Resilience in Veterans Study, which surveyed a nationally representative sample of 4,069 (age=62.2 years) U.S. veterans in 2019-2020. The sample was predominantly male (N = 3,564
90.2%) and non-Hispanic White (N = 3,318
78.0%). PTSD diagnoses were determined using the PTSD Checklist for DSM-5 and chronic pain and other physical health conditions using self-report and validated measures. Logistic regression analyses revealed that veterans with co-occurring chronic pain and PTSD were generally more likely to have a physical health condition (ORs 2.79-9.53) or a cognitive disorder (OR=16.55) relative to controls (ORs 2.79-9.53). ANCOVA analyses revealed that relative to veterans with chronic pain or PTSD only, those with both chronic pain and PTSD had worse physical functioning across several domains (ds=0.32-1.13). Results underscore the importance of approaching co-occurring chronic pain and PTSD using a whole person approach to care that targets both physical and mental health concerns.