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F20.3

Undifferentiated schizophrenia

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 14 never code together
F20.3code
Excludes1
  • acute schizophrenia-like psychotic disorder (F23)F23F23
Excludes2
F20code
Excludes1
  • brief psychotic disorder (F23)F23
  • cyclic schizophrenia (F25.0)F25.0
  • mood [affective] disorders with psychotic symptoms (F30.2, F31.2, F31.5, F31.64, F32.3, F33.3)F30.2F31.2F31.5F31.64F32.3F33.3
  • schizoaffective disorder (F25.-)F25.-
  • schizophrenic reaction NOS (F23)F23
Excludes2
  • schizophrenic reaction in:
  • alcoholism (F10.15-, F10.25-, F10.95-)F10.15-F10.25-F10.95-
  • brain disease (F06.2)F06.2
  • epilepsy (F06.2)F06.2
  • psychoactive drug use (F11-F19 with .15. .25, .95)F11-F19
  • schizotypal disorder (F21)F21
F01-F99chapter
Excludes2
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)R00-R99

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 4
F20code
Use additional code
  • code, if applicable, to identify:
  • other specified cognitive deficit (R41.84-)R41.84-
F20.3code
Inclusion terms
  • Atypical schizophrenia
F01-F99chapter
Includes
  • disorders of psychological development
Index entries leading here 1
  • Schizophrenia, schizophrenic F20.9
    • atypical (form) F20.3
    • undifferentiated (type) F20.3
Alongside this code 6 same parent — F20
F20.0 Paranoid schizophrenia F20.1 Disorganized schizophrenia F20.2 Catatonic schizophrenia F20.5 Residual schizophrenia F20.8 Other schizophrenia category F20.9 Schizophrenia, unspecified
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC57 CMS28HCC151 ESRD21HCC57 ESRD24HCC57 RX08HCC130

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2026
Parent
F20
Block
F20-F29
Siblings
6

Present FY2024–FY2027.