U.S. ICD-10-CM · FY 2027

F28 ICD-10-CM Code: Other psychotic disorder 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

F28

Other psychotic disorder not due to a substance or known physiological condition

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

Classification

Where F28 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 F28

    Other psychotic disorder not due to a substance or known physiological condition

  4. 4

    Code F28

    Other psychotic disorder not due to a substance or known physiological condition

Documentation details

Notes for this code

Inclusion terms

  • Chronic hallucinatory psychosis
  • Other specified schizophrenia spectrum and other psychotic disorder

Code first

No “code first” instruction is listed for F28.

Use additional code

No “use additional code” instruction is listed for F28.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for F28.

Excludes2

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

No Excludes2 note is listed for F28.

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 F28 mean?

F28 is the FY 2027 U.S. ICD-10-CM code for “Other psychotic disorder not due to a substance or known physiological condition.”

Is F28 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, F28 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 F28 located in ICD-10-CM?

F28 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 F28, Other psychotic disorder not due to a substance or known physiological condition.

What coding notes are listed for F28?

Its listed inclusion terms are Chronic hallucinatory psychosis; Other specified schizophrenia spectrum and other psychotic disorder. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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