ICD-10 code F43.12: Post-traumatic stress disorder, chronic
F43.12 is the ICD-10-CM code for post-traumatic stress disorder, chronic. It is one of three billable PTSD codes, with F43.10 (unspecified) and F43.11 (acute).
- Official description
- Post-traumatic stress disorder, chronic
- Billable
- Yes
- Parent category
- F43.1 Post-traumatic stress disorder (PTSD)
Verified against the FY2027 ICD-10-CM code set (CDC/NCHS and CMS), effective October 1, 2026 - September 30, 2027, on . Chapter 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99).
Coding notes for F43.12
- The ICD-10-CM index lists chronic PTSD under F43.12 and acute PTSD under F43.11. PTSD with no further detail goes to F43.10
- Neither the tabular list nor the official guidelines set a time threshold for chronic PTSD, so the code follows what the provider documents
- DSM-5-TR codes posttraumatic stress disorder to F43.10 and doesn't use F43.11 or F43.12
- Acute stress reaction is a separate code, F43.0
CPT code reference
ICD-10-CM codes describe the diagnosis. CPT codes describe the service. These are the CPT code pages on this site for therapy services.
- 90791 Psychiatric diagnostic evaluation (intake) Per session Medicare rate $173.35
- 90834 45-minute individual psychotherapy 38 to 52 minutes Medicare rate $113.90
- 90837 60-minute individual psychotherapy 53 minutes or longer Medicare rate $167.00
- 96127 Brief emotional or behavioral assessment Per instrument Medicare rate $5.01
Free resources
Related ICD-10 codes
Frequently asked questions
What is the difference between F43.10 and F43.12?
F43.10 is post-traumatic stress disorder, unspecified, and F43.12 is post-traumatic stress disorder, chronic. Use F43.12 when the provider documents the PTSD as chronic. Without that detail, the ICD-10-CM index sends PTSD to F43.10.
How long does PTSD have to last to be chronic in ICD-10-CM?
ICD-10-CM does not say. The tabular list has no note under F43.12 and the official guidelines do not define chronic PTSD, so the code follows the provider's documentation.
This page is a coding reference, not clinical, diagnostic, billing, or legal advice. The diagnosis is the treating clinician's call, and payer rules vary, so confirm against the current ICD-10-CM code set and official guidelines and your payer's policy. See the full mental health ICD-10 code list.