ICD-10 Code F34.89 – Other specified persistent mood disorders (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F34.89 – Other specified persistent mood disorders
What it is
Use this code for a persistent mood disorder that does not fit a more specific ICD-10 category. It indicates ongoing mood disturbance, but the documentation names an “other specified” persistent condition rather than a standard diagnosis.
Clinical signs
Clinical features vary; refer to documentation. You may see chronic depressed or irritable mood, reduced interest, or long-lasting mood symptoms that do not meet criteria for a named disorder.
When to use this code
Assign F34.89 when the clinician documents a persistent mood disorder and specifies that it is not otherwise classified, or uses similar wording such as “other specified persistent mood disorder.” Use it when the record supports a chronic mood condition but does not identify cyclothymia, dysthymia, or another more specific code. Check documentation if the diagnosis is vague.
Do not use for
Do not use this code for major depressive disorder, bipolar disorders, or cyclothymic disorder. If the note provides a more specific persistent mood diagnosis, code that condition instead.
Coding tip
Look for the exact clinician wording; “other specified” must be documented, or you should query for clarification.