F43.1

Non-billable

Post-traumatic stress disorder (PTSD)

F43.1 is the ICD-10-CM code for Post-traumatic stress disorder (PTSD). It is a non-billable category code — use a more specific child code such as F43.10 for billing.

Status
Header (non-billable)
Chapter
F01-F99
Parent
F43
Subcodes
3
Edition
FY2026

F01-F99 Mental, Behavioral and Neurodevelopmental disorders

Arises as a delayed or protracted response to a stressful event or situation (of either brief or long duration) of an exceptionally threatening or catastrophic nature, which is likely to cause pervasive distress in almost anyone. Predisposing factors, such as personality traits (e.g. compulsive, asthenic) or previous history of neurotic illness, may lower the threshold for the development of the syndrome or aggravate its course, but they are neither necessary nor sufficient to explain its occurrence. Typical features include episodes of repeated reliving of the trauma in intrusive memories ("flashbacks"), dreams or nightmares, occurring against the persisting background of a sense of "numbness" and emotional blunting, detachment from other people, unresponsiveness to surroundings, anhedonia, and avoidance of activities and situations reminiscent of the trauma. There is usually a state of autonomic hyperarousal with hypervigilance, an enhanced startle reaction, and insomnia. Anxiety and depression are commonly associated with the above symptoms and signs, and suicidal ideation is not infrequent. The onset follows the trauma with a latency period that may range from a few weeks to months. The course is fluctuating but recovery can be expected in the majority of cases. In a small proportion of cases the condition may follow a chronic course over many years, with eventual transition to an enduring personality change (F62.0).

Includes

  • Traumatic neurosis

Frequently asked questions

What is ICD-10 code F43.1?
F43.1 is the ICD-10-CM code for "Post-traumatic stress disorder (PTSD)". It falls under F01-F99 Mental, Behavioral and Neurodevelopmental disorders.
Is F43.1 a billable code?
No — F43.1 is a non-billable header code. Use a more specific child code (such as F43.10) for billing.
What are the subcodes of F43.1?
F43.1 has 3 more specific child codes, including F43.10, F43.11, F43.12.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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