Schizotypal disorder (F21)
The ICD-10 code F21 is used exclusively for identifying schizotypal disorder, a personality disorder that falls within the schizophrenia spectrum. This code helps distinguish this condition from other mental health diagnoses in clinical and billing contexts.
Schizotypal disorder; also known by synonyms such as latent schizophrenia, schizophrenic prodrome, or schizotypal personality disorder; is characterized by peculiar thoughts and behaviors that may resemble schizophrenia but without full psychosis. The ICD-10 code F21 specifically captures this unique set of symptoms and traits that differ from schizophrenia in remission or other personality disorders. Using this code ensures accurate documentation for patients who exhibit these distinctive Cluster A personality disorder features, guiding proper treatment planning and resource allocation. When searching for the ICD-10 code for schizotypal disorder, F21 is the definitive classification to use in medical coding and healthcare records.
Instructional Notations
Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Borderline schizophrenia
- Latent schizophrenia
- Latent schizophrenic reaction
- Prepsychotic schizophrenia
- Prodromal schizophrenia
- Pseudoneurotic schizophrenia
- Pseudopsychopathic schizophrenia
- Schizotypal personality disorder
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Schizotypal Personality Disorder
A personality disorder in which there are oddities of thought (magical thinking, paranoid ideation, suspiciousness), perception (illusions, depersonalization), speech (digressive, vague, overelaborate), and behavior (inappropriate affect in social interactions, frequently social isolation) that are not severe enough to characterize schizophrenia.
