U.S. ICD-10-CM · FY 2027

F29 ICD-10-CM Code: Unspecified psychosis not due to a substance or known physiological condition

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

F29

Unspecified psychosis not due to a substance or known physiological condition

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where F29 sits

  1. 1

    Chapter 5

    Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

  2. 2

    Section

    Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29)

  3. 3

    Category F29

    Unspecified psychosis not due to a substance or known physiological condition

  4. 4

    Code F29

    Unspecified psychosis not due to a substance or known physiological condition

Documentation details

Notes for this code

Inclusion terms

  • Psychosis NOS
  • Unspecified schizophrenia spectrum and other psychotic disorder

Code first

No “code first” instruction is listed for F29.

Use additional code

No “use additional code” instruction is listed for F29.

Excludes1

Conditions that should not be reported together with this code.

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

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for F29.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code F29 mean?

F29 is the FY 2027 U.S. ICD-10-CM code for “Unspecified psychosis not due to a substance or known physiological condition.”

Is F29 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, F29 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is F29 located in ICD-10-CM?

F29 is listed in Chapter 5, Mental, Behavioral and Neurodevelopmental disorders (F01-F99), within Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29) (F20–F29), under category F29, Unspecified psychosis not due to a substance or known physiological condition.

What coding notes are listed for F29?

Its listed inclusion terms are Psychosis NOS; Unspecified schizophrenia spectrum and other psychotic disorder. No code-first instruction is listed. Excludes1 notes: mental disorder NOS (F99); unspecified mental disorder due to known physiological condition (F09). No Excludes2 note is listed.

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