ICD-10-CM 2027
ICD-10 code for Restzustand
From the official ICD-10-CM alphabetic index entry “Restzustand (schizophrenic)”. Page updated September 29, 2026.
About coding Restzustand
The ICD-10-CM code for Restzustand is F20.5 (Residual schizophrenia).
Within F20 (schizophrenia), F20.5 is specifically for residual schizophrenia. Related codes cover paranoid schizophrenia (F20.0), Disorganized schizophrenia (F20.1), Catatonic schizophrenia (F20.2), Undifferentiated schizophrenia (F20.3), other schizophrenia (F20.8) and unspecified (F20.9).
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 Restzustand ICD-10 codes
What is the ICD-10 code for Restzustand?
- F20.5 — Residual schizophrenia.
Is F20.5 billable?
- Yes. F20.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F20.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F20.5 as a principal diagnosis.
Is F20.5 a CC or MCC?
- F20.5 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.