F34.1 ICD-10-CM

ICD-10-CM code F34.1 describes persistent depressive disorder (dysthymia). Chronic, long-standing depressive mood present most of the day, more days than not, for at least two years. 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 F34.1

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 F34.1 specifically, chronic, long-standing depressive mood present most of the day, more days than not, for at least two years.

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 F34.1

Clinicians often look up F34.1 using plain-language terms. This code maps to:

Frequently asked questions