F34.0 – Cyclothymic disorder
ICD-10-CM 2027 diagnosis code · Mood [affective] disorders
ICD-10-CM code
F34.0
- Code
F34.0(claims format:F340)- Description
- Cyclothymic disorder
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
- Block
- F30-F39 Mood [affective] disorders
- Parent codes
- F34
Notes for F34.0
Applicable to:
- Affective personality disorder
- Cycloid personality
- Cyclothymia
- Cyclothymic personality
Index terms for F34.0
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Cyclothymia
- Cycloid personality
- Personality, cycloid
- Disorder, cyclothymic
- Personality, affective
- Cyclothymic personality
- Personality, cyclothymic
- Personality, hyperthymic
- Disorder, personality, affective
- Disorder, personality, cyclothymic
- Disorder, personality, hyperthymic
- Disorder, mood, persistent, cyclothymia
Related codes in F34
Frequently asked questions
What is ICD-10 code F34.0?
F34.0 is the ICD-10-CM code for cyclothymic disorder, in the block F30-F39 (Mood [affective] disorders).
Is F34.0 a billable code?
Yes. F34.0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does F34.0 belong to?
It belongs to category F34 – Persistent mood [affective] disorders.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.