Poster 108: Accuracy of Natural Language Processing for Identifying Spondyloarthropathy in Primary Care Patients Receiving Lumbar Spine Imaging. Issue 9 (26th September 2018) - Lagbas, Mychael B.; Jarvik, Jeffrey G.; Rundell, Sean D.; James, Kathryn T.; Desai, RiniA.; Tan, Katherine W.; Paige, Jeremy; Avins, Andrew; Huhdanpaa, Hannu; Nerenz, David R.; Luetmer, Patrick; Griffith, Brent; et al.