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v1.0.0
ICD-10 Guide
ICD-10 CodesG43.819

G43.819

Billable

Other migraine, intractable, without status migrainosus

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

Code Description

ICD-10 G43.819 is a billable code used to indicate a diagnosis of other migraine, intractable, without status migrainosus.

Key Diagnostic Point:

G43.819 refers to a specific type of migraine that is classified as intractable, meaning it is resistant to treatment and does not respond to standard migraine therapies. Patients with this condition experience severe headache episodes that can significantly impair their daily functioning. Unlike status migrainosus, which is characterized by a migraine attack lasting more than 72 hours, G43.819 indicates that the patient does not meet this criterion but still suffers from debilitating migraine attacks that are difficult to manage. The intractable nature of these migraines often leads to increased healthcare utilization, including frequent emergency room visits and consultations with headache specialists. Triggers for these migraines can vary widely and may include stress, hormonal changes, dietary factors, and environmental stimuli. Preventive treatments may involve a combination of lifestyle modifications, pharmacotherapy, and alternative therapies aimed at reducing the frequency and severity of migraine attacks. Accurate coding of this condition is essential for appropriate treatment planning and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in patient presentation and response to treatment
  • Need for comprehensive documentation of treatment history
  • Differentiation from other migraine types and headache disorders
  • Potential for overlapping symptoms with other conditions

Audit Risk Factors

  • Insufficient documentation of treatment attempts
  • Lack of clarity in distinguishing intractable migraines from other types
  • Inconsistent use of terminology in clinical notes
  • Failure to document patient response to preventive therapies

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed history of migraine episodes, treatment history, and response to therapies.

Common Clinical Scenarios

Patients presenting with frequent, severe migraines that do not respond to standard treatments.

Billing Considerations

Neurologists should document all treatment modalities attempted, including preventive and abortive therapies.

Primary Care

Documentation Requirements

Comprehensive patient history, including lifestyle factors and potential triggers.

Common Clinical Scenarios

Patients with recurrent migraines seeking management strategies.

Billing Considerations

Primary care providers should ensure thorough documentation of referrals to specialists and treatment plans.

Coding Guidelines

Inclusion Criteria

Use G43.819 When
  • According to ICD
  • 10 coding guidelines, G43
  • 819 should be used when the migraine is intractable and does not meet the criteria for status migrainosus
  • Coders must ensure that the documentation supports the diagnosis and that other migraine types are ruled out

Exclusion Criteria

Do NOT use G43.819 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99214CPT Code

Established patient office visit, level 4

Clinical Scenario

Used for follow-up visits for patients with intractable migraines.

Documentation Requirements

Documentation must include history of present illness, review of systems, and treatment plan.

Specialty Considerations

Neurologists may require additional documentation of neurological examinations.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of migraine types, including intractable migraines. This specificity aids in better understanding the prevalence and management of these conditions, impacting treatment protocols and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of migraine types, including intractable migraines. This specificity aids in better understanding the prevalence and management of these conditions, impacting treatment protocols and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    American Migraine Foundation

Coding & Billing References

  • •
    American Migraine Foundation

Frequently Asked Questions

What distinguishes G43.819 from other migraine codes?

G43.819 specifically refers to intractable migraines that do not meet the criteria for status migrainosus, requiring detailed documentation of treatment history and patient response.