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ICD-10-CM 2027 diagnosis code

F20.9Schizophrenia, unspecified

✓ Billable / specific

F20.9 is a valid, billable ICD-10-CM code for schizophrenia, unspecified. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Looking up by condition? See ICD-10 code for Schizophrenia.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About F20.9

F20.9 is the ICD-10-CM diagnosis code for schizophrenia, unspecified. It belongs to category F20 (schizophrenia), block F20-F29 (schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders) and chapter 5 (mental, Behavioral and Neurodevelopmental disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within F20, choose F20.9 (unspecified) only when documentation doesn't support a more specific option: paranoid schizophrenia (F20.0), Disorganized schizophrenia (F20.1), Catatonic schizophrenia (F20.2), Undifferentiated schizophrenia (F20.3), residual schizophrenia (F20.5) and other schizophrenia (F20.8).

Use an additional code, if applicable, to identify: other specified cognitive deficit (R41.84-).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 885 (Psychoses, relative weight 1.3901), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 295.90 (unspecified schizophrenia, unspecified).

Notes that apply from higher levels

Instructions written at a parent level also apply to F20.9.

› From F20 Schizophrenia
Excludes1
Excludes2
Use additional code
  • code, if applicable, to identify:
  • other specified cognitive deficit (R41.84-)

Broader instructions also apply from Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.

Alphabetic index entries

5 entries

Terms in the official ICD-10-CM index that lead to F20.9.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 19 · Mental Diseases and Disorders

ICD-9-CM equivalent

Converter →
  • 295.90Unspecified schizophrenia, unspecifiedapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about F20.9

Is F20.9 billable?

Yes. F20.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can F20.9 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict F20.9 as a principal diagnosis.

Is F20.9 a CC or MCC?

No. F20.9 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does F20.9 group to?

F20.9 is used in the MS-DRG v44.0 logic for MS-DRG 885 (Psychoses). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for F20.9?

The CMS General Equivalence Mappings map F20.9 to ICD-9-CM 295.90.