ICD-10-CM 2027
ICD-10 code for simplex schizophrenia
From the official ICD-10-CM alphabetic index entry “Schizophrenia, schizophrenic › simplex”. Page updated September 29, 2026.
About coding simplex schizophrenia
The ICD-10-CM code for simplex schizophrenia is F20.89 (Other schizophrenia).
Within F20.8, choose F20.89 (Other schizophrenia) only when documentation doesn't support a more specific option: Schizophreniform disorder (F20.81).
Use an additional code, if applicable, to identify: other specified cognitive deficit (R41.84-).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about simplex schizophrenia ICD-10 codes
What is the ICD-10 code for simplex schizophrenia?
- F20.89 — Other schizophrenia.
Is F20.89 billable?
- Yes. F20.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F20.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F20.89 as a principal diagnosis.
Is F20.89 a CC or MCC?
- F20.89 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.