Is F09 a billable code?
Yes. F09 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
F09: Unspecified mental disorder due to known physiological condition
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
F09 is a billable ICD-10-CM diagnosis code for unspecified mental disorder due to known physiological condition. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with F09 already added.Good Faith EstimateStart a cost estimate with F09 already added.CMS-1500 Claim FormFill a claim form with F09 in box 21.
F09 questions
What does F09 mean?
F09 is the ICD-10-CM code for Unspecified mental disorder due to known physiological condition. It is in chapter 5, Mental, behavioral and neurodevelopmental disorders (F01-F99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.