Is F40.21 a billable code?
No. F40.21 is a header code that groups 2 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
F40.21: Animal type phobia
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
F40.21 groups related diagnoses under animal type phobia. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under F40.21
Other codes in F40.2 Specific (isolated) phobias
F40.21 questions
What does F40.21 mean?
F40.21 is the ICD-10-CM code for Animal type phobia. 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.