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v1.0.0
ICD-10 Guide
ICD-10 CodesG44.0

G44.0

Billable

Cluster headaches and other trigeminal autonomic cephalggias (TAC)

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

Code Description

ICD-10 G44.0 is a billable code used to indicate a diagnosis of cluster headaches and other trigeminal autonomic cephalggias (tac).

Key Diagnostic Point:

Cluster headaches are a type of primary headache disorder characterized by recurrent, severe unilateral headaches that occur in clusters or episodes. These headaches are often accompanied by autonomic symptoms such as lacrimation, nasal congestion, and ptosis on the affected side. The pain is typically described as sharp or burning and can last from 15 minutes to three hours. The condition is more prevalent in men than women and often begins in adulthood. Trigeminal autonomic cephalgias (TAC) encompass a group of headache disorders that share similar features, including cluster headaches, paroxysmal hemicrania, and short-lasting unilateral neuralgiform headache attacks. Triggers for cluster headaches can include alcohol consumption, smoking, and changes in sleep patterns. Preventive treatments may include medications such as verapamil, corticosteroids, and lithium, while acute attacks can be treated with oxygen therapy or triptans. Accurate diagnosis and coding are essential for effective management and treatment planning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and symptoms among patients
  • Overlap with other headache disorders, complicating diagnosis
  • Need for detailed patient history to identify triggers
  • Potential for misdiagnosis with other types of headaches

Audit Risk Factors

  • Inadequate documentation of headache characteristics
  • Failure to document associated autonomic symptoms
  • Misclassification of headache type
  • Lack of evidence for preventive treatment trials

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed headache history, including frequency, duration, and associated symptoms.

Common Clinical Scenarios

Patients presenting with recurrent unilateral headaches, particularly during cluster periods.

Billing Considerations

Ensure documentation includes response to treatments and any changes in headache patterns.

Pain Management

Documentation Requirements

Comprehensive pain assessment and treatment history.

Common Clinical Scenarios

Management of chronic cluster headache patients requiring multimodal pain management strategies.

Billing Considerations

Document all interventions and patient responses to avoid audit issues.

Coding Guidelines

Inclusion Criteria

Use G44.0 When
  • According to ICD
  • 10 guidelines, G44
  • 0 should be used when the patient presents with cluster headaches or other trigeminal autonomic cephalgias
  • Documentation must support the diagnosis, including the frequency and characteristics of headaches, as well as any associated symptoms

Exclusion Criteria

Do NOT use G44.0 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99213CPT Code

Established patient office visit, Level 3

Clinical Scenario

Used for follow-up visits for cluster headache management.

Documentation Requirements

Document history of present illness, review of systems, and treatment response.

Specialty Considerations

Neurologists should ensure detailed headache diaries are reviewed.

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 ability to track and manage conditions like cluster headaches. This specificity aids in better treatment planning and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of headache disorders, improving the ability to track and manage conditions like cluster headaches. This specificity aids in better treatment planning and resource allocation.

Reimbursement & Billing Impact

reimbursement and to avoid denials.

Resources

Clinical References

  • •
    American Headache Society

Coding & Billing References

  • •
    American Headache Society

Frequently Asked Questions

What are the common triggers for cluster headaches?

Common triggers include alcohol consumption, smoking, strong odors, and changes in sleep patterns. Identifying these triggers can help in managing the condition.