- F21 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM F21 became effective on October 1, 2022.
- This is the American ICD-10-CM version of F21 – other international versions of ICD-10 F21 may differ.
ICD-10-CM F21 is grouped within Diagnostic Related Group(s):
- 883 Disorders of personality and impulse control
Applicable To
- Borderline schizophrenia
- Latent schizophrenia
- Latent schizophrenic reaction
- Prepsychotic schizophrenia
- Prodromal schizophrenia
- Pseudoneurotic schizophrenia
- Pseudopsychopathic schizophrenia
- Schizotypal personality disorder
Type 2 Excludes
- Asperger’s syndrome (F84.5)
- schizoid personality disorder (F60.1)
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2024 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to F21:
- schizotypal > personality F60.9
- schizotypal (personality) > Disorder (of)
- latent > schizophrenic F23
- borderline > Schizophrenia, schizophrenic F20.9
- incipient > Schizophrenia, schizophrenic F20.9
- latent > Schizophrenia, schizophrenic F20.9
- prepsychotic > Schizophrenia, schizophrenic F20.9
- prodromal > Schizophrenia, schizophrenic F20.9
- pseudoneurotic > Schizophrenia, schizophrenic F20.9
- pseudopsychopathic > Schizophrenia, schizophrenic F20.9