NPI Atlas

F43.1 – Post-traumatic stress disorder (PTSD)

ICD-10-CM 2027 diagnosis code · Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders

Non-billable header

ICD-10-CM code F43.1

Code: F43.1 (claims format: F431)
Description: Post-traumatic stress disorder (PTSD)
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Block: F40-F48 Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders
Parent codes: F43

Billable codes under F43.1

F43.1 is a header code and cannot be used on claims. Choose the most specific code:

F43.10 – Post-traumatic stress disorder, unspecifiedBillable
F43.11 – Post-traumatic stress disorder, acuteBillable
F43.12 – Post-traumatic stress disorder, chronicBillable

Notes for F43.1

Applicable to:

Traumatic neurosis

Related codes in F43

F43.0 – Acute stress reactionBillable
F43.2 – Adjustment disordersHeader
F43.8 – Other reactions to severe stressHeader
F43.9 – Reaction to severe stress, unspecifiedBillable

Frequently asked questions

What is ICD-10 code F43.1?

F43.1 is the ICD-10-CM code for post-traumatic stress disorder (PTSD), in the block F40-F48 (Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders).

Is F43.1 a billable code?

No. F43.1 is a header code with more specific child codes; report one of the billable codes listed above.

What category does F43.1 belong to?

It belongs to category F43 – Reaction to severe stress, and adjustment disorders.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.