F20Header code — not billable

Schizophrenia

Chapter
5. Mental, Behavioral and Neurodevelopmental disorders
Category
F20
Effective date
October 1, 2026

Related codes in category F20

F20.0Paranoid schizophreniaYesF20.1Disorganized schizophreniaYesF20.2Catatonic schizophreniaYesF20.3Undifferentiated schizophreniaYesF20.5Residual schizophreniaYesF20.8Other schizophreniaF20.81Schizophreniform disorderYesF20.89Other schizophreniaYesF20.9Schizophrenia, unspecifiedYes

Frequently asked questions

What is ICD-10 code F20?

F20 is an ICD-10-CM diagnosis code for Schizophrenia.

Is F20 a billable code?

No. F20 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is F20 in?

F20 falls under Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.

When did F20 become effective?

F20 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to F20?

F20 belongs to category F20, which includes 9 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.