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v1.0.0
ICD-10 Guide
ICD-10 CodesG44.099

G44.099

Billable

Other trigeminal autonomic cephalggias (TAC), not intractable

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

Code Description

ICD-10 G44.099 is a billable code used to indicate a diagnosis of other trigeminal autonomic cephalggias (tac), not intractable.

Key Diagnostic Point:

Other trigeminal autonomic cephalgias (TAC) encompass a group of headache disorders characterized by unilateral head pain associated with autonomic symptoms, such as lacrimation, nasal congestion, and ptosis. These headaches are typically severe and can be triggered by various factors, including stress, certain foods, and changes in sleep patterns. Unlike intractable TACs, which are resistant to treatment, non-intractable TACs can often be managed with preventive therapies and lifestyle modifications. Patients may experience episodic or chronic forms of these headaches, and the diagnosis is primarily clinical, based on the patient's history and symptomatology. Effective management may include pharmacological interventions such as beta-blockers, calcium channel blockers, or anticonvulsants, along with non-pharmacological strategies like cognitive behavioral therapy and lifestyle adjustments to avoid known triggers.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from other headache disorders
  • Variability in presentation and triggers
  • Need for comprehensive patient history
  • Potential overlap with other TAC codes

Audit Risk Factors

  • Inadequate documentation of symptoms
  • Failure to specify non-intractable status
  • Misclassification with other TAC codes
  • Lack of detailed patient history

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed patient history, symptom diary, and response to treatments.

Common Clinical Scenarios

Patients presenting with unilateral headaches and autonomic symptoms.

Billing Considerations

Ensure clear documentation of headache characteristics and triggers.

Pain Management

Documentation Requirements

Comprehensive pain assessment and treatment response documentation.

Common Clinical Scenarios

Management of chronic headache patients requiring multidisciplinary approaches.

Billing Considerations

Document all interventions and patient responses to avoid audit issues.

Coding Guidelines

Inclusion Criteria

Use G44.099 When
  • According to ICD
  • 10 guidelines, G44
  • 099 should be used when the headache is not classified as intractable and when the symptoms align with trigeminal autonomic cephalgias
  • It is essential to document the specific characteristics of the headache and any associated autonomic symptoms

Exclusion Criteria

Do NOT use G44.099 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 headache management.

Documentation Requirements

Document the patient's history, symptoms, and treatment response.

Specialty Considerations

Neurologists should ensure detailed documentation of headache characteristics.

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, including TACs, which aids in better tracking and management of these conditions. G44.099 provides a distinct classification that helps differentiate from other headache types.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of headache disorders, including TACs, which aids in better tracking and management of these conditions. G44.099 provides a distinct classification that helps differentiate from other headache types.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    American Academy of Neurology

Coding & Billing References

  • •
    American Academy of Neurology

Frequently Asked Questions

What are the common triggers for G44.099?

Common triggers include stress, certain foods, sleep disturbances, and environmental factors. Identifying and managing these triggers is crucial for effective treatment.