F43.89
✓ Billable
Other reactions to severe stress
ICD-10-CM · FY2026 · Mental, Behavioral and Neurodevelopmental Disorders
Code
F43.89
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Mental, Behavioral and Neurodevelopmental Disorders
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code F43.89?
ICD-10-CM code F43.89 represents Other reactions to severe stress. It is a billable diagnosis code in the Mental, Behavioral and Neurodevelopmental Disorders chapter, effective October 1, 2025 – September 30, 2026.
Is F43.89 billable?
Yes. F43.89 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is F43.89 in?
F43.89 belongs to the Mental, Behavioral and Neurodevelopmental Disorders chapter (F01–F99) of ICD-10-CM.
Related codes in the F43 category
F43
Reaction to severe stress, and adjustment disorders
Non-billable
F43.0
Acute stress reaction
Billable
F43.1
Post-traumatic stress disorder (PTSD)
Non-billable
F43.2
Adjustment disorders
Non-billable
F43.8
Other reactions to severe stress
Non-billable
F43.9
Reaction to severe stress, unspecified
Billable
F43.10
Post-traumatic stress disorder, unspecified
Billable
F43.11
Post-traumatic stress disorder, acute
Billable
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