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ICD-10 Guide
ICD-10 CodesG40.219

G40.219

Billable

Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, without status epilepticus

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

Code Description

ICD-10 G40.219 is a billable code used to indicate a diagnosis of localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, without status epilepticus.

Key Diagnostic Point:

G40.219 refers to a specific type of epilepsy characterized by focal (localized) seizures that are symptomatic of an underlying condition. These seizures are complex partial seizures, which means they involve a loss of consciousness or altered awareness, and they are classified as intractable, indicating that they are resistant to treatment with antiepileptic drugs (AEDs). Patients with this condition may experience a variety of symptoms, including confusion, unusual sensations, or involuntary movements. The term 'without status epilepticus' indicates that the patient is not currently experiencing a prolonged seizure episode, which is a medical emergency. This code is crucial for accurately capturing the complexity of the patient's condition and the challenges faced in managing their epilepsy, particularly when standard treatments fail to control seizure activity.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Differentiating between types of seizures and their classifications
  • Understanding the nuances of intractable epilepsy
  • Documenting the underlying symptomatic causes
  • Navigating the complexities of treatment-resistant conditions

Audit Risk Factors

  • Inadequate documentation of seizure types and frequency
  • Failure to specify the intractable nature of the epilepsy
  • Lack of clarity regarding the absence of status epilepticus
  • Misclassification of seizure types

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed seizure history, including frequency, duration, and triggers; response to antiepileptic medications; and any neurological examinations.

Common Clinical Scenarios

Patients presenting with recurrent seizures despite treatment, requiring adjustments in medication or further diagnostic evaluation.

Billing Considerations

Neurologists must ensure comprehensive documentation of the patient's seizure history and treatment response to support the coding of intractable epilepsy.

Epileptology

Documentation Requirements

Comprehensive seizure diaries, EEG results, imaging studies, and detailed treatment plans.

Common Clinical Scenarios

Patients undergoing evaluation for surgical intervention due to intractable seizures.

Billing Considerations

Epileptologists should document all relevant diagnostic tests and treatment trials to justify the use of G40.219.

Coding Guidelines

Inclusion Criteria

Use G40.219 When
  • According to ICD
  • 10 guidelines, G40
  • 219 should be used when the patient has a confirmed diagnosis of localization
  • related symptomatic epilepsy with complex partial seizures that are intractable and without status epilepticus
  • Documentation must support the diagnosis and the intractable nature of the seizures

Exclusion Criteria

Do NOT use G40.219 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

95816CPT Code

Electroencephalogram (EEG)

Clinical Scenario

Used to confirm the diagnosis of epilepsy and assess seizure types.

Documentation Requirements

EEG results must be documented, including any abnormalities noted.

Specialty Considerations

Neurologists should ensure that the EEG is interpreted in the context of the patient's clinical history.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more precise coding of epilepsy types, improving the ability to track treatment outcomes and resource utilization. G40.219 provides a specific code for intractable complex partial seizures, which was less clearly defined in ICD-9.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more precise coding of epilepsy types, improving the ability to track treatment outcomes and resource utilization. G40.219 provides a specific code for intractable complex partial seizures, which was less clearly defined in ICD-9.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    American Epilepsy Society

Coding & Billing References

  • •
    American Epilepsy Society

Frequently Asked Questions

What is the difference between complex partial seizures and simple partial seizures?

Complex partial seizures involve a loss of consciousness or altered awareness, while simple partial seizures do not affect consciousness and may involve localized motor or sensory symptoms.