DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

F23 diagnosis code · Billable category · FY2027

F23 Brief psychotic disorder

  • Billable
  • CC
  • HCC 152
  • POA reported

F23 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 5 Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
  2. F20-F29 Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29)
  3. F23 Brief psychotic disorder
CC / MCC
CC
MS-DRG
885
HCC V28
152
POA
Reported
Code Editor
–
Index entries
26

Instructions

At F23

Inclusion terms

  • Paranoid reaction
  • Psychogenic paranoid psychosis

Excludes2

Notes that also apply

Chapter 5 instructions (Includes 1, Excludes2 1): printed on the chapter 5 page.

Index entries

  • Bouffée délirante → F23
  • Oneirophrenia → F23
  • Attack, attacksschizophreniform, brief → F23
  • Episodepsychotic → F23
  • Episodeschizophrenic (acute) NEC, brief → F23
  • Paranoidreaction (acute) → F23
  • Psychosis, psychoticacute (transient) → F23
  • Psychosis, psychoticcycloid → F23
  • Psychosis, psychoticepisode → F23
  • Psychosis, psychoticpsychogenic (paranoid) → F23
  • Psychosis, psychoticreactive (brief) (transient) (emotional stress) (psychological trauma) → F23
  • Psychosis, psychoticsituational (reactive) → F23
  • Reactionparanoid (acute) → F23
  • Reactionschizophrenic → F23
  • Schizophrenia, schizophrenicacute (brief) (undifferentiated) → F23
  • Schizophrenia, schizophrenicreaction → F23
  • State (of)oneiroid (schizophrenia-like) → F23
  • Disorder (of)psychotictransient (acute) → F23
  • Disorder (of)schizophreniformbrief → F23
  • Paranoidpsychosis (climacteric) (involutional) (menopausal)psychogenic (acute) → F23
  • Psychosis, psychoticconfusionalreactive → F23
  • Psychosis, psychoticparanoid (climacteric) (involutional) (menopausal)psychogenic (acute) → F23
  • Psychosis, psychoticschizophreniformbrief → F23
  • Psychosis, psychoticschizophreniformconfusional type → F23
  • Reactionschizophrenicacute (brief) (undifferentiated) → F23
  • Reactionschizophrenicundifferentiated (acute) (brief) → F23

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for F23
CC / MCCCC
PDX exclusion list0648 (3 codes)
Appendix BMDC 19 Mental Diseases and Disorders, MS-DRG 885 (Psychoses…)
Code Editor–
POAReported
HCC V28HCC 152 Psychosis, Except Schizophrenia

CC as a secondary diagnosis, not when the principal diagnosis is on its PDX exclusion list.

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy