F31 vs F34.0
F31 (Bipolar disorder) compared with F34.0 (Cyclothymic disorder), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. F31 carries an Excludes2 note covering F34.0: “cyclothymia (F34.0)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| F31Bipolar disorder | F34.0Cyclothymic disorder | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) |
| Definition | Bipolar disorder is a non-billable ICD-10-CM category code (F31). | Cyclothymic disorder is a billable ICD-10-CM diagnosis code (F34.0). |
| Includes | bipolar I disorder bipolar type I disorder manic-depressive illness manic-depressive psychosis | Affective personality disorder Cycloid personality Cyclothymia Cyclothymic personality |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources