2027 ICD-10-CM Diagnosis Code F23Brief psychotic disorder
ICD-10-CM Codes›F01–F99›F20-F29›F23
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Risk Adjusts — HCC 152
- Not Chronic
F23 is a billable ICD-10-CM diagnosis code for brief psychotic disorder. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 885. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 3 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Schizophrenia spectrum and other psychotic disorders.
For Medicare Advantage risk adjustment, F23 maps to CMS-HCC Category 152 (Psychosis, Except Schizophrenia) under the V28 model, adding a risk factor of about 0.484 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
F23 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute paranoid reaction
- Acute polymorphic psychotic disorder
- Acute polymorphic psychotic disorder co-occurrent with symptoms of schizophrenia
- Acute polymorphic psychotic disorder without symptoms of schizophrenia
- Acute psychosis
- Acute schizophrenic episode
- Acute transient psychotic disorder
- Bouffée délirante
- Brief reactive psychosis
- Cycloid psychosis
- Disturbance of perception associated with conversion and dissociative phenomenon
- Psychogenic paranoid psychosis
- Reactive confusion
- Reactive psychoses
- Schizophrenic reaction
- Transient organic mental disorder
- Transient organic psychoses
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to F23: its own notes plus those printed at Chapter 5. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- disorders of psychological development
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Paranoid reaction
- Psychogenic paranoid psychosis
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name F23, its category, or a range that includes it.
Excludes1 6
These codes carry an Excludes1 note naming F23: they are not reported together with it, unless the two conditions are unrelated.
- F20 Schizophreniabrief psychotic disorder (F23)
- F20 Schizophreniaschizophrenic reaction NOS (F23)
- F20.3 Undifferentiated schizophreniaacute schizophrenia-like psychotic disorder (F23)
- F53 Mental and behavioral disorders associated with the puerperium, not elsewhere classified
- R44 Other symptoms and signs involving general sensations and perceptions
- R46 Symptoms and signs involving appearance and behavior
Excludes2 3
These codes carry an Excludes2 note naming F23: its condition is not part of those codes, and both may be reported when the patient has both.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disorder (of) See Also: Disease;
Oneirophrenia F23
reactive F23
cycloid F23
episode F23
reactive (brief) (transient) (emotional stress) (psychological trauma) F23
brief F23
confusional type F23
Reaction See Also: Disorder;
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Brief Psychotic Disorder
a disorder characterized by delusions, hallucinations, disorganized speech, and/or grossly disorganized behavior that resolve within a month.
Patient EducationClinical
Psychotic Disorders
Psychotic disorders are severe mental disorders that cause abnormal thinking and perceptions. People with psychoses lose touch with reality. Two of the main symptoms are delusions and hallucinations. Delusions are false beliefs, such as thinking that someone is plotting against you or that the TV is sending you secret messages.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert F23 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About F23Overview
What is the ICD-10 code for brief psychotic disorder?
The ICD-10-CM code for brief psychotic disorder is F23. It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is F23 (Brief psychotic disorder) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report brief psychotic disorder on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does F23 group to?
When brief psychotic disorder is the principal diagnosis on an inpatient stay, it groups to MS-DRG 885 (psychoses), which carries a relative weight of 1.3904. Higher weights mean higher Medicare reimbursement.
Is F23 a CC or MCC?
CMS lists F23 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 3 closely related codes in its exclusion list.
What is the ICD-9 equivalent of F23?
Under the General Equivalence Mappings, brief psychotic disorder converts to ICD-9-CM 298.3 (acute paranoid reaction), 298.4 (psychogen paranoid psych), and 298.8 (react psychosis NEC/NOS). The mapping is approximate, so confirm the match fits the documentation.
What HCC is F23?
F23 (brief psychotic disorder) maps to CMS-HCC Category 152 (Psychosis, Except Schizophrenia), commonly written as HCC 152, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It mapped to HCC 58 under the retired V24 model. It also maps in the ESRD (V24) model. In the Part D prescription drug model it maps to RxHCC 130.
Does F23 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, F23 adds a risk adjustment factor of about 0.484 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.208 to 0.579 depending on the payment segment). A more severe related category (HCC 151) supersedes it when both are reported. See the full factor table on the HCC 152 category page.
