F23 — Brief psychotic disorder
Is F23 billable?
Yes — F23 is billable for FY2027. F23 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. F23 may be submitted for encounters from October 1, 2026 through September 30, 2027.
F23 at a glance
| Code | F23 |
|---|---|
| Description | Brief psychotic disorder |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does F23 group to?
F23 sits in MDC 19 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 885Psychosesmedical
As a secondary diagnosis, F23 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is F23 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to F23. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Bouffée délirante
- Oneirophrenia
- Attack, attacks › schizophreniform, brief
- Episode › psychotic
- Episode › schizophrenicNEC, brief
- Paranoid › reaction
- Psychosis, psychotic › acute
- Psychosis, psychotic › cycloid
- Psychosis, psychotic › episode
- Psychosis, psychotic › psychogenic
- Psychosis, psychotic › reactive
- Psychosis, psychotic › situational
Excludes2 — not included here
The conditions below are not part of F23, but a patient may have both at the same time. When documentation supports it, F23 and the excluded code may both be reported.
Inclusion terms
Alternative wording in documentation that is classified to F23.
- Paranoid reaction
- Psychogenic paranoid psychosis
Excludes2 — not included here — inherited from Chapter 5
The conditions below are not part of F23, but a patient may have both at the same time. When documentation supports it, F23 and the excluded code may both be reported.
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
How long has F23 existed?
F23 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with F23?
ICD-10-CM declares these codes mutually exclusive with F23 — exactly one of each pair can be correct for a given encounter.