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v1.0.0
ICD-10 Guide
ICD-10 CodesG44.039

G44.039

Billable

Episodic paroxysmal hemicrania, not intractable

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

Code Description

ICD-10 G44.039 is a billable code used to indicate a diagnosis of episodic paroxysmal hemicrania, not intractable.

Key Diagnostic Point:

Episodic paroxysmal hemicrania is a primary headache disorder characterized by recurrent, unilateral headaches that are typically short in duration, lasting from 2 to 30 minutes. These headaches occur in clusters, often several times a day, and are associated with autonomic symptoms such as conjunctival injection, nasal congestion, or lacrimation. Unlike other headache disorders, paroxysmal hemicrania is responsive to indomethacin, a nonsteroidal anti-inflammatory drug. The term 'not intractable' indicates that the condition is manageable and does not resist treatment. Patients may experience significant disability during headache episodes, but the episodic nature allows for periods of relief. Triggers can include alcohol consumption, certain foods, and changes in sleep patterns. Preventive treatments may involve lifestyle modifications and pharmacological interventions aimed at reducing the frequency and severity of headache attacks.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from other headache disorders such as migraines and cluster headaches.
  • Need for precise documentation of headache characteristics and response to treatment.
  • Variability in patient presentation and triggers.
  • Potential overlap with other ICD-10 codes for headache disorders.

Audit Risk Factors

  • Inadequate documentation of headache frequency and duration.
  • Failure to note the response to indomethacin treatment.
  • Misclassification of headache type.
  • Lack of detailed patient history regarding triggers.

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed headache diaries, treatment response records, and patient history.

Common Clinical Scenarios

Patients presenting with recurrent unilateral headaches and autonomic symptoms.

Billing Considerations

Ensure clear documentation of headache characteristics and treatment efficacy.

Primary Care

Documentation Requirements

Comprehensive patient history and symptom assessment.

Common Clinical Scenarios

Patients with episodic headaches seeking management options.

Billing Considerations

Referral to neurology may be necessary for complex cases.

Coding Guidelines

Inclusion Criteria

Use G44.039 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the diagnosis is supported by clinical documentation
  • Include details about the frequency, duration, and characteristics of headaches, as well as treatment responses

Exclusion Criteria

Do NOT use G44.039 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99213CPT Code

Established patient office visit, Level 3

Clinical Scenario

Used during follow-up visits for headache management.

Documentation Requirements

Document patient history, headache characteristics, and treatment response.

Specialty Considerations

Neurologists may require more detailed documentation compared to primary care.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of headache disorders, improving the accuracy of diagnoses and treatment tracking. G44.039 provides a distinct code for episodic paroxysmal hemicrania, enhancing clarity in patient records.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of headache disorders, improving the accuracy of diagnoses and treatment tracking. G44.039 provides a distinct code for episodic paroxysmal hemicrania, enhancing clarity in patient records.

Reimbursement & Billing Impact

reimbursement and to avoid claim denials.

Resources

Clinical References

  • •
    American Headache Society

Coding & Billing References

  • •
    American Headache Society

Frequently Asked Questions

What distinguishes episodic paroxysmal hemicrania from migraines?

Episodic paroxysmal hemicrania is characterized by shorter headache duration, unilateral pain, and a strong response to indomethacin, unlike migraines which can last longer and have different treatment responses.