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ICD-10 Guide
ICD-10 CodesG40.111

G40.111

Billable

Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, with status epilepticus

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

Code Description

ICD-10 G40.111 is a billable code used to indicate a diagnosis of localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, with status epilepticus.

Key Diagnostic Point:

G40.111 refers to a specific type of epilepsy characterized by focal (localization-related) seizures that are symptomatic in nature. These seizures are classified as simple partial seizures, meaning they do not involve loss of consciousness. The term 'intractable' indicates that the seizures are resistant to treatment, particularly to antiepileptic drugs (AEDs). Patients with this condition may experience recurrent seizures that can escalate to status epilepticus, a medical emergency defined by prolonged seizure activity lasting more than five minutes or multiple seizures without recovery in between. The etiology of symptomatic focal epilepsy can vary widely, including structural brain abnormalities, traumatic brain injury, or infections. Accurate diagnosis often requires neuroimaging and EEG studies to identify the seizure focus and assess the underlying pathology. Management typically involves a combination of AEDs, lifestyle modifications, and in some cases, surgical intervention. Given the complexity of the condition and the potential for significant morbidity, thorough documentation and coding are essential for appropriate treatment and reimbursement.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Need for precise documentation of seizure type and frequency
  • Differentiation between intractable and non-intractable epilepsy
  • Requirement for detailed patient history and treatment response
  • Potential for status epilepticus complicating the clinical picture

Audit Risk Factors

  • Inadequate documentation of seizure frequency and type
  • Failure to document the intractable nature of seizures
  • Lack of evidence for status epilepticus occurrence
  • Misclassification of seizure types

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Comprehensive seizure logs, EEG results, and imaging studies.

Common Clinical Scenarios

Patients presenting with recurrent seizures, status epilepticus, or treatment-resistant epilepsy.

Billing Considerations

Neurologists must document the specific characteristics of seizures and the patient's response to various AEDs.

Emergency Medicine

Documentation Requirements

Immediate assessment of seizure duration, patient history, and interventions performed.

Common Clinical Scenarios

Patients presenting to the ER with prolonged seizures or status epilepticus.

Billing Considerations

Emergency physicians must quickly document the patient's clinical status and interventions to ensure accurate coding.

Coding Guidelines

Inclusion Criteria

Use G40.111 When
  • According to ICD
  • 10 guidelines, G40
  • 111 should be used when the patient has documented focal seizures that are symptomatic and intractable, with evidence of status epilepticus
  • Documentation must clearly indicate the nature of the seizures and treatment history

Exclusion Criteria

Do NOT use G40.111 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

95816CPT Code

Electroencephalogram (EEG)

Clinical Scenario

Used to confirm seizure type and localization.

Documentation Requirements

EEG results must be documented, including any focal abnormalities.

Specialty Considerations

Neurologists should ensure that EEG findings correlate with clinical symptoms.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of epilepsy types, improving the accuracy of diagnoses and treatment plans. G40.111 provides a clear distinction for intractable focal epilepsy with status epilepticus, which is crucial for appropriate management and reimbursement.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of epilepsy types, improving the accuracy of diagnoses and treatment plans. G40.111 provides a clear distinction for intractable focal epilepsy with status epilepticus, which is crucial for appropriate management and reimbursement.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    Epilepsy Foundation

Coding & Billing References

  • •
    Epilepsy Foundation

Frequently Asked Questions

What distinguishes G40.111 from other epilepsy codes?

G40.111 specifically indicates intractable focal epilepsy with simple partial seizures and the occurrence of status epilepticus, requiring detailed documentation of seizure characteristics and treatment history.