F43.0 ICD-10-CM Code: Acute stress reaction
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
F43.0Acute stress reaction
ICD-10-CM diagnosis code · United States clinical modification
Where F43.0 sits
- 1
Chapter 5
Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
- 2
Section
Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)
- 3
Category F43
Reaction to severe stress, and adjustment disorders
- 4
Code F43.0
Acute stress reaction
Notes for this code
Inclusion terms
- Acute crisis reaction
- Acute reaction to stress
- Combat and operational stress reaction
- Combat fatigue
- Crisis state
- Psychic shock
Code first
No “code first” instruction is listed for F43.0.
Use additional code
No “use additional code” instruction is listed for F43.0.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for F43.0.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for F43.0.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code F43.0 mean?
F43.0 is the FY 2027 U.S. ICD-10-CM code for “Acute stress reaction.”
Is F43.0 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, F43.0 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is F43.0 located in ICD-10-CM?
F43.0 is listed in Chapter 5, Mental, Behavioral and Neurodevelopmental disorders (F01-F99), within Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48) (F40–F48), under category F43, Reaction to severe stress, and adjustment disorders.
What coding notes are listed for F43.0?
Its listed inclusion terms are Acute crisis reaction; Acute reaction to stress; Combat and operational stress reaction; Combat fatigue; Crisis state; Psychic shock. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.