F31.64 — Bipolar disorder, current episode mixed, severe, with psychotic features
Is F31.64 billable?
Yes — F31.64 is billable for FY2027. F31.64 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. F31.64 may be submitted for encounters from October 1, 2026 through September 30, 2027.
F31.64 at a glance
| Code | F31.64 |
|---|---|
| Description | Bipolar disorder, current episode mixed, severe, with psychotic features |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does F31.64 group to?
F31.64 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, F31.64 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is F31.64 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to F31.64. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Disorder › bipolar › currentepisode › mixed › severe › with psychotic features (of)
Inclusion terms
Alternative wording in documentation that is classified to F31.64.
- Bipolar disorder, current episode mixed with mood-congruent psychotic symptoms
- Bipolar disorder, current episode mixed with mood-incongruent psychotic symptoms
Excludes1 — never code together — inherited from F31
The conditions below can never be reported together with F31.64 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 5
The conditions below are not part of F31.64, but a patient may have both at the same time. When documentation supports it, F31.64 and the excluded code may both be reported.
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Excludes2 — not included here — inherited from F31
The conditions below are not part of F31.64, but a patient may have both at the same time. When documentation supports it, F31.64 and the excluded code may both be reported.
- cyclothymia (F34.0)
How long has F31.64 existed?
F31.64 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.