Personal history of combat and operational stress reaction

This code signifies a patient's past experience with a psychological or physiological response to stressful events encountered during military combat or operational duties. It indicates that while the acute stress reaction has resolved, it remains a relevant part of the patient's medical history.

This code is appropriate when documenting a patient's history of combat-related stress reactions, even if they are not currently experiencing symptoms of PTSD or other mental health disorders directly attributable to that past event. It is used to provide context for current health concerns or for screening purposes.

• Assign this code as a secondary diagnosis to provide historical context.
• Do not use this code for active Post-Traumatic Stress Disorder (PTSD); instead, refer to the appropriate mental health codes.
• Ensure documentation clearly states a history of combat/operational stress reaction, not an active condition.