F43.12: Post-traumatic stress disorder, chronic

Billable ICD-10-CM code, FY2027

What ICD-10-CM says

Notes at F43.1, Post-traumatic stress disorder (PTSD) (they apply to every code under it)

Includes

  • Traumatic neurosis

What F43.12 covers

F43.12 is for PTSD that the clinician documents as chronic. The F43.1 subcategory includes traumatic neurosis.

Behavioral health, psychiatry and veterans' care use it often. F43.11 is acute PTSD and F43.10 is PTSD with neither acute nor chronic stated. Acute stress reaction (F43.0) and adjustment disorders (F43.2-) are different diagnoses.

Billing and coding notes

The code set does not define when PTSD becomes chronic, so use F43.12 only when the clinician writes chronic. If the note just says PTSD, the code is F43.10.

Co-occurring conditions documented by the clinician, such as major depression or substance use, are coded alongside F43.12. There is no excludes note between them here.

Related codes under F43.1

Questions about F43.12

What is the difference between F43.12 and F43.10?

F43.12 is chronic PTSD. F43.10 is PTSD with no acute or chronic qualifier in the documentation.

Can F43.12 and F33.1 be coded together?

Yes, when the clinician documents both conditions. There is no excludes note between them.

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ICD-10-CM in CloudMedico

In CloudMedico, a visit's diagnoses come from the current ICD-10-CM list. For US practices, the visit flags a code that isn't billable on its date, and a superbill made from an invoice carries the visit's diagnoses.

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ICD-10-CM FY2027, code descriptions file, CDC National Center for Health Statistics, effective October 1, 2026. ICD-10-CM is in the public domain.

Official text: ICD-10-CM FY2027 tabular list, CDC National Center for Health Statistics, effective October 1, 2026. The summary, notes and answers on this page are CloudMedico's.