F59
✓ Billable
Unspecified behavioral syndromes associated with physiological disturbances and physical factors
ICD-10-CM · FY2026 · Mental, Behavioral and Neurodevelopmental Disorders
Code
F59
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 F59?
ICD-10-CM code F59 represents Unspecified behavioral syndromes associated with physiological disturbances and physical factors. It is a billable diagnosis code in the Mental, Behavioral and Neurodevelopmental Disorders chapter, effective October 1, 2025 – September 30, 2026.
Is F59 billable?
Yes. F59 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is F59 in?
F59 belongs to the Mental, Behavioral and Neurodevelopmental Disorders chapter (F01–F99) of ICD-10-CM.
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