F43.0
Acute stress reaction
Billable code
This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
This code · F43.0
Synonyms
Acute crisis reaction Acute reaction to stress Combat and operational stress reaction Combat fatigue Crisis state Psychic shock
Inherited from chapter 5Mental, Behavioral and Neurodevelopmental disorders
Includes
disorders of psychological development
Excludes 2
symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Official Guidelines for F43.0
FY 2026 ›Find F43.0 in the alphabetic index
25 index paths lead to this code
- Battle exhaustion
- Combat fatigue
- Shellshock
- Crisis › acute reaction
- Crisis › state
- Delirium, delirious › exhaustion
- Exhaustion, exhaustive › battle
- Exhaustion, exhaustive › delirium
- Exhaustion, exhaustive › psychosis
- Fatigue › combat
- Fugue › reaction to exceptional stress
- Panic › reaction to exceptional stress
- Psychosis, psychotic › exhaustive
- Reaction › combat and operational stress
- Reaction › crisis, acute
- Shock › psychic
- State › crisis
- Stupor › reaction to exceptional stress
- Crisis › emotional › acute reaction to stress
- Disorder › acute › stress
- Disorder › dissociative › brief reactive
- Disorder › stress › acute
- Disturbance › situational › acute
- Reaction › stress › acute
- Situational › disturbance › acute