ICD-10-CM code F34.0 describes cyclothymic disorder. Persistent, fluctuating hypomanic and depressive symptoms not meeting full episode criteria. It is a billable, specific code valid for claim submission. It is grouped under the “Mood Disorders” section of the mental, behavioral, and neurodevelopmental disorders chapter.
When to use F34.0
This group covers depressive disorders, bipolar disorders, cyclothymia, and persistent depressive disorder. Select single versus recurrent, severity, and remission status, and note psychotic features when present. For F34.0 specifically, persistent, fluctuating hypomanic and depressive symptoms not meeting full episode criteria.
Documentation & billing
Document the episode type (single versus recurrent), severity, and any psychotic features or remission status. Use the most specific code the record supports instead of defaulting to an unspecified code.
Common pitfalls
- Defaulting to unspecified depression (F32.9 or F32.A) when severity is documented.
- Confusing bipolar I (with manic episodes) with bipolar II (hypomanic plus depressive episodes).
- Omitting psychotic-feature or remission modifiers.
Common search terms for F34.0
Clinicians often look up F34.0 using plain-language terms. This code maps to:
Frequently asked questions
What is ICD-10-CM code F34.0?
Cyclothymic disorder. Persistent, fluctuating hypomanic and depressive symptoms not meeting full episode criteria.
Is F34.0 a billable ICD-10-CM code?
Yes. F34.0 (Cyclothymic disorder) is a billable, specific ICD-10-CM code that can be reported on a claim. Confirm the current official descriptor against the CDC code set and your payer’s policies before submitting.
What should I document to support F34.0?
Document the episode type (single versus recurrent), severity, and any psychotic features or remission status. Use the most specific code the record supports instead of defaulting to an unspecified code.