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ICD-10 Guide
ICD-10 CodesF34.0

F34.0

Billable

Cyclothymic disorder

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 F34.0 is a billable code used to indicate a diagnosis of cyclothymic disorder.

Key Diagnostic Point:

Cyclothymic disorder is a chronic mood disorder characterized by numerous periods of hypomanic symptoms and periods of depressive symptoms lasting for at least two years (one year in children and adolescents). The symptoms do not meet the criteria for a major depressive episode or a manic episode. Individuals with cyclothymic disorder experience fluctuations in mood that can significantly impact their daily functioning and quality of life. The disorder is often considered a milder form of bipolar disorder, but it can still lead to significant distress and impairment. Patients may exhibit mood swings that are less severe than those seen in bipolar I or II disorders, but they can still be disruptive. The risk of developing a more severe mood disorder, such as bipolar disorder, is higher in individuals with cyclothymic disorder. Treatment typically involves psychotherapy and may include mood stabilizers or other medications to help manage symptoms. Regular suicide risk assessments are crucial, as individuals with mood disorders have an increased risk of suicidal ideation and behavior.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between cyclothymic disorder and other mood disorders.
  • Understanding the chronic nature of the disorder and its symptomatology.
  • Documenting the duration and severity of symptoms accurately.
  • Assessing comorbid conditions that may complicate diagnosis.

Audit Risk Factors

  • Inadequate documentation of symptom duration and severity.
  • Failure to assess and document comorbid conditions.
  • Lack of clear treatment plans and follow-up notes.
  • Insufficient suicide risk assessments.

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Detailed patient history, symptom assessment, treatment plans, and follow-up notes.

Common Clinical Scenarios

Initial diagnosis, ongoing management, and treatment adjustments.

Billing Considerations

Ensure comprehensive documentation of mood fluctuations and their impact on functioning.

Primary Care

Documentation Requirements

Routine mental health screenings, referrals to specialists, and management of comorbid conditions.

Common Clinical Scenarios

Identifying symptoms during routine visits and managing referrals.

Billing Considerations

Documenting mental health assessments alongside physical health evaluations.

Coding Guidelines

Inclusion Criteria

Use F34.0 When
  • According to ICD
  • 10 guidelines, cyclothymic disorder is classified under mood disorders
  • It is essential to document the chronic nature of the symptoms and ensure that they do not meet the criteria for other mood disorders

Exclusion Criteria

Do NOT use F34.0 When
  • Exclusion criteria include the absence of a major depressive episode or manic episode

Related ICD-10 Codes

Related CPT Codes

90834CPT Code

Psychotherapy, 45 minutes with patient

Clinical Scenario

Used for ongoing therapy sessions for cyclothymic disorder.

Documentation Requirements

Document the duration of the session and the focus of therapy.

Specialty Considerations

Psychiatrists should ensure that therapy notes reflect the patient's mood fluctuations.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of mood disorders, including cyclothymic disorder, which helps in better tracking and treatment of these conditions.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of mood disorders, including cyclothymic disorder, which helps in better tracking and treatment of these conditions.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of mood disorders, including cyclothymic disorder, which helps in better tracking and treatment of these conditions.

Resources

Clinical References

  • •
    American Psychiatric Association - Cyclothymic Disorder

Coding & Billing References

  • •
    American Psychiatric Association - Cyclothymic Disorder

Frequently Asked Questions

What is the difference between cyclothymic disorder and bipolar disorder?

Cyclothymic disorder involves chronic mood fluctuations that are less severe than those seen in bipolar disorder. Individuals with cyclothymic disorder do not experience full-blown manic or major depressive episodes.