F43.0 – Acute stress reaction
ICD-10-CM 2027 diagnosis code · Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders
ICD-10-CM code
F43.0
- Code
F43.0(claims format:F430)- Description
- Acute stress reaction
- Billable
- Yes – valid for HIPAA-covered transactions
- 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
Notes for F43.0
Applicable to:
- Acute crisis reaction
- Acute reaction to stress
- Combat and operational stress reaction
- Combat fatigue
- Crisis state
- Psychic shock
Index terms for F43.0
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Shellshock
- State, crisis
- Crisis, state
- Combat fatigue
- Shock, psychic
- Fatigue, combat
- Battle exhaustion
- Crisis, acute reaction
- Disorder, acute, stress
- Disorder, stress, acute
- Reaction, stress, acute
- Reaction, crisis, acute
- Situational, reaction, acute
- Exhaustion, exhaustive, battle
- Situational, disturbance, acute
- Delirium, delirious, exhaustion
- Disturbance, situational, acute
- Psychosis, psychotic, exhaustive
- Exhaustion, exhaustive, delirium
- Exhaustion, exhaustive, psychosis
- Panic, reaction to exceptional stress
- Fugue, reaction to exceptional stress
- Stupor, reaction to exceptional stress
- Disorder, dissociative, brief reactive
- Reaction, combat and operational stress
Related codes in F43
Frequently asked questions
What is ICD-10 code F43.0?
F43.0 is the ICD-10-CM code for acute stress reaction, in the block F40-F48 (Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders).
Is F43.0 a billable code?
Yes. F43.0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does F43.0 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.