Is F43 a billable code?
No. F43 is a header code that groups 14 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
F43: Reaction to severe stress, and adjustment disorders
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
F43 groups related diagnoses under reaction to severe stress, and adjustment disorders. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under F43
- F43.0Acute stress reaction
- F43.10Post-traumatic stress disorder, unspecified
- F43.11Post-traumatic stress disorder, acute
- F43.12Post-traumatic stress disorder, chronic
- F43.20Adjustment disorder, unspecified
- F43.21Adjustment disorder with depressed mood
- F43.22Adjustment disorder with anxiety
- F43.23Adjustment disorder with mixed anxiety and depressed mood
- F43.24Adjustment disorder with disturbance of conduct
- F43.25Adjustment disorder with mixed disturbance of emotions and conduct
- F43.29Adjustment disorder with other symptoms
- F43.81Prolonged grief disorder
- F43.89Other reactions to severe stress
- F43.9Reaction to severe stress, unspecified
F43 questions
What does F43 mean?
F43 is the ICD-10-CM code for Reaction to severe stress, and adjustment disorders. It is in chapter 5, Mental, behavioral and neurodevelopmental disorders (F01-F99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.