F21 ICD-10-CM Code: Schizotypal disorder
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
F21Schizotypal disorder
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where F21 sits
- 1
Chapter 5
Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
- 2
Section
Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29)
- 3
Category F21
Schizotypal disorder
- 4
Code F21
Schizotypal disorder
Documentation details
Notes for this code
Inclusion terms
- Borderline schizophrenia
- Latent schizophrenia
- Latent schizophrenic reaction
- Prepsychotic schizophrenia
- Prodromal schizophrenia
- Pseudoneurotic schizophrenia
- Pseudopsychopathic schizophrenia
- Schizotypal personality disorder
Code first
No “code first” instruction is listed for F21.
Use additional code
No “use additional code” instruction is listed for F21.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for F21.
Excludes2
Conditions not included here that may be reported separately when present.
- Asperger's syndrome (F84.5)
- schizoid personality disorder (F60.1)
Transparency
Source and release
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 sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code F21 mean?
F21 is the FY 2027 U.S. ICD-10-CM code for “Schizotypal disorder.”
Is F21 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, F21 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 F21 located in ICD-10-CM?
F21 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 F21, Schizotypal disorder.
What coding notes are listed for F21?
Its listed inclusion terms are Borderline schizophrenia; Latent schizophrenia; Latent schizophrenic reaction; Prepsychotic schizophrenia; Prodromal schizophrenia; Pseudoneurotic schizophrenia; Pseudopsychopathic schizophrenia; Schizotypal personality disorder. No code-first instruction is listed. No Excludes1 note is listed. Excludes2 notes: Asperger's syndrome (F84.5); schizoid personality disorder (F60.1).
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