Post-traumatic stress disorder, chronic

This code signifies a mental health condition characterized by persistent and severe symptoms following exposure to a traumatic event. These symptoms, such as intrusive thoughts, avoidance behaviors, negative alterations in cognition and mood, and hyperarousal, have been present for at least three months. The chronicity indicates a prolonged and often debilitating impact on the individual's functioning.

Apply this code when documentation clearly indicates a diagnosis of Post-Traumatic Stress Disorder where the duration of symptoms has exceeded three months. Supporting documentation should include a psychiatric evaluation, psychological assessment, or progress notes detailing the traumatic event, the specific PTSD symptoms, and their duration.

• Differentiate from acute PTSD (F43.10) or other stress reactions based on symptom duration.
• Ensure the medical record explicitly states "chronic" or indicates symptoms persisting for at least three months.
• Code any associated comorbid conditions, such as depression or substance use disorders, separately.