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F43

⚠ Non-billable (Header)

Reaction to severe stress, and adjustment disorders

Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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✅ No additional coding notes for F43

Child Codes (5)

F43.0Acute stress reactionF43.1Post-traumatic stress disorder (PTSD)F43.2Adjustment disordersF43.8Other reactions to severe stressF43.9Reaction to severe stress, unspecified

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Code Information

CodeF43
BillableNo — Header code
CategoryMental, Behavioral and Neurodevelopmental disorders (F01-F99)
Excludes10 rule(s)
Excludes20 note(s)
Child codes5

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)