Schizotypal disorder
In Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29), chapter 5: Mental, Behavioral and Neurodevelopmental Disorders
- F21 is billable and valid on claims for FY 2027. If the record has more detail, check the other codes under F20-F29 below.
- As a secondary diagnosis it is not a CC or MCC, so it doesn't raise the MS-DRG payment.
- Counts toward HCC 153 (Personality Disorders; Anorexia/Bulimia Nervosa) in the Medicare Advantage risk model (CMS-HCC V28).
- AHRQ's Chronic Condition Indicator classes it as chronic: expected to last 12 months or longer and to limit daily life or need ongoing care.
Also indexed as: Disorder, personality, schizotypal; Disorder, schizotypal; Reaction, schizophrenic, latent; Schizophrenia, borderline; Schizophrenia, incipient; Schizophrenia, latent; Schizophrenia, prepsychotic; Schizophrenia, prodromal; Schizophrenia, pseudoneurotic; Schizophrenia, pseudopsychopathic
Advertisements
Instructional notes
Includes: conditions that are coded here
- Borderline schizophrenia
- Latent schizophrenia
- Latent schizophrenic reaction
- Prepsychotic schizophrenia
- Prodromal schizophrenia
- Pseudoneurotic schizophrenia
- Pseudopsychopathic schizophrenia
- Schizotypal personality disorder
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers psychological pain disorders, substance use, abuse, dependence and remission, factitious disorder including Munchausen by proxy, and dementia severity.
- Pain disorders related to psychological factors (page 43)
- Mental and behavioral disorders due to psychoactive substance use (page 43)
- Factitious Disorder (page 44)
- Dementia (page 45)
Other codes under F20-F29
Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29)
- F20Schizophrenia
- F21Schizotypal disorder(this code)
- F22Delusional disorders
- F23Brief psychotic disorder
- F24Shared psychotic disorder
- F25Schizoaffective disorders
- F28Other psychotic disorder not due to a substance or known physiological condition
- F29Unspecified psychosis not due to a substance or known physiological condition
F21 MS-DRG
As the principal diagnosis, F21 groups to MS-DRG 883 (v44.0).
Related conditions
Grouped by AHRQ's Clinical Classifications Software Refined (CCSR), which sorts every diagnosis code into clinically meaningful categories.
F21 is in Schizophrenia spectrum and other psychotic disorders (MBD001, its default category), with 103 codes. Others in it:
- F06.0 Psychotic disorder with hallucinations due to known physiological condition
- F06.1 Catatonic disorder due to known physiological condition
- F06.2 Psychotic disorder with delusions due to known physiological condition
- F10.150 Alcohol abuse with alcohol-induced psychotic disorder with delusions
- F10.151 Alcohol abuse with alcohol-induced psychotic disorder with hallucinations
- F10.159 Alcohol abuse with alcohol-induced psychotic disorder, unspecified
- F10.250 Alcohol dependence with alcohol-induced psychotic disorder with delusions
- F10.251 Alcohol dependence with alcohol-induced psychotic disorder with hallucinations
F21 is in Personality disorders (MBD009), with 15 codes. Others in it:
- F07.0 Personality change due to known physiological condition
- F60.0 Paranoid personality disorder
- F60.1 Schizoid personality disorder
- F60.2 Antisocial personality disorder
- F60.3 Borderline personality disorder
- F60.4 Histrionic personality disorder
- F60.5 Obsessive-compulsive personality disorder
- F60.6 Avoidant personality disorder
Medicare coverage articles listing F21
These 6 Medicare billing and coding articles list F21 as a diagnosis that supports medical necessity for the services they cover. From the CMS Medicare Coverage Database; check your own contractor's article before billing.
Other codes that refer to F21
Notes on these codes point to F21.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Personality Disorders
Your personality is your own way of thinking, feeling, behaving, and relating to others. Once you become an adult, your personality usually doesn't change much.
Read more about personality disorders on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.
ICD-9-CM equivalent
Legacy crosswalk from the CMS General Equivalence Mappings (last updated 2018).
- 301.22 Schizotypal personality disorder