What does ICD-10 code F29 mean?

F29 is the ICD-10-CM diagnosis code for Unspecified psychosis not due to a substance or known physiological condition. Unspecified psychosis not due to a substance or known physiological condition

Is F29 a billable ICD-10 code?

Yes, F29 is a billable ICD-10-CM code that can be used on medical claims.

What chapter is F29 in?

F29 is classified under Chapter 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99), Section F20-F29: Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29).

What are the includes and excludes for F29?

Excludes1 (not coded here): mental disorder NOS (F99); unspecified mental disorder due to known physiological condition (F09).

F29 Unspecified psychosis not due to a substance or known physiological condition

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The ICD-10-CM code for Unspecified psychosis not due to a substance or known physiological condition is F29 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter: 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Section: F20-F29: Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29)
Category F29: 1 code (1 billable)
FY2026 Status: Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to F29:

Psychosis, psychotic
Psychosis, psychotic › confusional
Disorder (of) › schizophrenia spectrum and other psychotic disorder
Psychosis, psychotic › nonorganic
Schizophrenia, schizophrenic › spectrum and other psychotic disorder

Excludes1

Not coded here. These conditions should NOT be coded together with F29.

mental disorder NOS (F99)
unspecified mental disorder due to known physiological condition (F09)

Inclusion Terms

Psychosis NOS
Unspecified schizophrenia spectrum and other psychotic disorder

U.S. Hospital Utilization

An estimated 100,735 U.S. inpatient stays in 2023 included F29 among the documented diagnoses.
41,030 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Pain disorders related to psychological factors (TOC entry)

a. Pain disorders related to psychological factors ..................................................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.a

Psychoactive substance use disorders (TOC entry)

b. Mental and behavioral disorders due to psychoactive substance use ................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference F29 with the canonical source and edition:

F29 — Unspecified psychosis not due to a substance or known physiological condition. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/F29

Canonical URL: https://icd10codingpro.com/codes/F29