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ICD-10 Guide
ICD-10 CodesF34.1

F34.1

Billable

Dysthymic disorder

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

Code Description

ICD-10 F34.1 is a billable code used to indicate a diagnosis of dysthymic disorder.

Key Diagnostic Point:

Dysthymic disorder, also known as persistent depressive disorder, is characterized by a chronic state of depression that lasts for at least two years in adults (one year in children and adolescents). Patients often experience a depressed mood most of the day, more days than not, along with additional symptoms such as low self-esteem, feelings of hopelessness, fatigue, and difficulty concentrating. Unlike major depressive disorder, dysthymia is less severe but more enduring, which can lead to significant impairment in social, occupational, and other important areas of functioning. The condition may also co-occur with other mood disorders, including major depressive episodes, which can complicate the clinical picture. Treatment typically involves psychotherapy, medication such as mood stabilizers or antidepressants, and lifestyle modifications. Given the chronic nature of dysthymic disorder, ongoing assessment for suicide risk is crucial, as individuals may have a higher propensity for suicidal ideation due to prolonged emotional distress.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between dysthymic disorder and major depressive disorder.
  • Identifying chronicity and duration of symptoms.
  • Assessing co-morbid conditions that may complicate diagnosis.
  • Understanding the impact of treatment modalities on coding.

Audit Risk Factors

  • Inadequate documentation of symptom duration.
  • Failure to note co-morbid conditions.
  • Lack of clear treatment plans or follow-up assessments.
  • Insufficient suicide risk assessments.

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Comprehensive mental status exams, detailed history of mood symptoms, and treatment plans.

Common Clinical Scenarios

Patients presenting with chronic low mood, fatigue, and difficulty in daily functioning.

Billing Considerations

Regular assessments for suicidal ideation and functional impairment are essential.

Primary Care

Documentation Requirements

Routine screening for depression, documentation of patient-reported outcomes, and follow-up care plans.

Common Clinical Scenarios

Patients with chronic complaints of fatigue, sleep disturbances, and low mood without clear physical causes.

Billing Considerations

Collaboration with mental health specialists for comprehensive care.

Coding Guidelines

Inclusion Criteria

Use F34.1 When
  • According to ICD
  • 10 guidelines, dysthymic disorder is coded as F34
  • 1 when symptoms persist for at least two years
  • It is important to document the chronic nature of the disorder and any co
  • occurring conditions

Exclusion Criteria

Do NOT use F34.1 When
  • Exclusion criteria include major depressive episodes that are not part of the chronic presentation

Related ICD-10 Codes

Related CPT Codes

90834CPT Code

Psychotherapy, 45 minutes with patient

Clinical Scenario

Used for ongoing therapy sessions for patients with dysthymic disorder.

Documentation Requirements

Document the duration of the session, treatment goals, and patient progress.

Specialty Considerations

Psychiatrists and psychologists should ensure treatment plans align with coding.

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 dysthymic disorder, enhancing the ability to capture the chronic nature of the condition and its impact on patient care.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of mood disorders, including dysthymic disorder, enhancing the ability to capture the chronic nature of the condition and its impact on patient care.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of mood disorders, including dysthymic disorder, enhancing the ability to capture the chronic nature of the condition and its impact on patient care.

Resources

Clinical References

  • •
    American Psychiatric Association - Diagnostic and Statistical Manual of Mental Disorders

Coding & Billing References

  • •
    American Psychiatric Association - Diagnostic and Statistical Manual of Mental Disorders

Frequently Asked Questions

What is the difference between dysthymic disorder and major depressive disorder?

Dysthymic disorder is characterized by a chronic low mood lasting for at least two years, while major depressive disorder involves more severe episodes of depression that can occur intermittently. Dysthymia is often less severe but more persistent.