nontraumatic

adjective

non·​trau·​mat·​ic -trə-ˈmat-ik  -trȯ- 

-trau̇-

: not causing, caused by, or associated with trauma and especially traumatic injury

nontraumatic bone fracture

nontraumatic subarachnoid hemorrhage

Ankle pain in children can be caused by traumatic injuries to bone, ligament, or tendon or by nontraumatic conditions, such as congenital and developmental anomalies …

—John A. Churchill and John M. Mazur, The Journal of the American Academy of Orthopaedic Surgeons

In an attempt to explain the cause of sudden nontraumatic death in conditioned runners, necropsy was performed on five white male runners who had died while running.

—B. F. Waller et al., The Physician and Sportsmedicine