Personal history of combat and operational stress reaction

This code indicates a patient's past experience with a significant psychological or physiological response to stressful combat or operational situations. It signifies that while the acute stress reaction has resolved, it remains a relevant part of the patient's medical history. This history can influence current health conditions, treatment plans, or ongoing mental health monitoring.

Use this code when documenting a patient's historical diagnosis of combat or operational stress reaction, even if they are not currently experiencing acute symptoms. This is appropriate for patients presenting with unrelated conditions where their military history is pertinent, or for follow-up care related to the long-term impacts of such experiences. It helps provide a comprehensive view of the patient's health background.

• Assign this code as a secondary diagnosis when the historical stress reaction is relevant to the current encounter.
• Do not use this code for active Post-Traumatic Stress Disorder (PTSD) or other current mental health diagnoses; use the appropriate F codes instead.
• Ensure documentation clearly supports a history of combat/operational stress reaction, not an ongoing acute episode.