Final answer:
An accident resulting in injury is considered an adverse event that may require physician intervention.
Step-by-step explanation:
An adverse event that may require physician intervention is an accident resulting in injury. This could include a fall, a medication error, or any other incident that leads to physical harm to the resident. In such situations, the physician would need to intervene to assess the extent of the injury, provide necessary medical treatment, and ensure the safety and well-being of the resident.