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ICD-10 Guide
ICD-10 CodesF32.9

F32.9

Billable

Major depressive disorder, single episode, unspecified

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

Code Description

ICD-10 F32.9 is a billable code used to indicate a diagnosis of major depressive disorder, single episode, unspecified.

Key Diagnostic Point:

Major depressive disorder (MDD) is a common and serious mood disorder characterized by persistent feelings of sadness, hopelessness, and a lack of interest or pleasure in previously enjoyed activities. The diagnosis of a single episode of MDD, unspecified, indicates that the clinician has determined the patient meets the criteria for a major depressive episode but has not specified the severity or additional features of the episode. Symptoms may include significant weight loss or gain, insomnia or hypersomnia, fatigue, feelings of worthlessness, and recurrent thoughts of death or suicide. This code is often used when the clinician has not provided sufficient detail to classify the episode further, which can complicate treatment planning and risk assessment. The unspecified nature of the code allows for flexibility in documentation but may require additional follow-up to clarify the diagnosis and treatment approach. It is crucial for healthcare providers to conduct thorough assessments, including suicide risk evaluations, as patients with MDD may exhibit increased vulnerability to self-harm.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in symptom presentation and severity
  • Need for comprehensive documentation to support diagnosis
  • Potential overlap with other mood disorders
  • Importance of suicide risk assessment

Audit Risk Factors

  • Inadequate documentation of symptoms and duration
  • Failure to assess and document suicide risk
  • Use of unspecified codes without justification
  • Lack of follow-up documentation

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Detailed patient history, symptom assessment, and treatment plan must be documented.

Common Clinical Scenarios

Initial evaluation of a patient presenting with depressive symptoms, follow-up visits for medication management.

Billing Considerations

Ensure thorough documentation of suicide risk assessments and any co-occurring disorders.

Primary Care

Documentation Requirements

Comprehensive assessment of mental health status, including screening tools and follow-up notes.

Common Clinical Scenarios

Routine screening for depression during annual wellness visits, management of chronic conditions with depressive symptoms.

Billing Considerations

Collaboration with mental health specialists may be necessary for complex cases.

Coding Guidelines

Inclusion Criteria

Use F32.9 When
  • According to ICD
  • 10 coding guidelines, F32
  • 9 should be used when the clinician has determined a diagnosis of major depressive disorder but has not specified the severity or additional features
  • It is essential to document the duration of symptoms and any functional impairment

Exclusion Criteria

Do NOT use F32.9 When
  • Exclusion criteria include the absence of a major depressive episode or the presence of a mood disorder due to a medical condition

Related ICD-10 Codes

Related CPT Codes

99213CPT Code

Established patient office visit, Level 3

Clinical Scenario

Used for follow-up visits for medication management in patients diagnosed with F32.9.

Documentation Requirements

Document the patient's mental status, treatment response, and any changes in symptoms.

Specialty Considerations

Psychiatrists may require more detailed documentation compared to primary care providers.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of mental health disorders, improving the ability to track and manage conditions like major depressive disorder. F32.9 provides flexibility but requires careful documentation to avoid misinterpretation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of mental health disorders, improving the ability to track and manage conditions like major depressive disorder. F32.9 provides flexibility but requires careful documentation to avoid misinterpretation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of mental health disorders, improving the ability to track and manage conditions like major depressive disorder. F32.9 provides flexibility but requires careful documentation to avoid misinterpretation.

Resources

Clinical References

  • •
    American Psychiatric Association - DSM-5

Coding & Billing References

  • •
    American Psychiatric Association - DSM-5

Frequently Asked Questions

What is the difference between F32.9 and F32.0?

F32.9 is used for major depressive disorder, single episode, unspecified, while F32.0 is for a mild depressive episode. The distinction lies in the severity of symptoms and the need for more detailed documentation in F32.9.