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v1.0.0
ICD-10 Guide
ICD-10 CodesG92.01

G92.01

Billable

Immune effector cell-associated neurotoxicity syndrome, grade 1

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

Code Description

ICD-10 G92.01 is a billable code used to indicate a diagnosis of immune effector cell-associated neurotoxicity syndrome, grade 1.

Key Diagnostic Point:

Immune effector cell-associated neurotoxicity syndrome (ICANS) is a neurological complication that can occur following immunotherapy, particularly with CAR T-cell therapy. Grade 1 ICANS is characterized by mild symptoms that may include headache, fatigue, and mild confusion, which do not significantly impair daily functioning. Patients may experience transient neurological symptoms, such as mild motor weakness or sensory changes, but these symptoms are typically self-limiting and resolve without the need for intensive intervention. The pathophysiology of ICANS involves the activation of immune effector cells that can lead to neuroinflammation and disruption of the blood-brain barrier. Clinicians must monitor patients closely for any progression of symptoms, as the syndrome can escalate to higher grades of severity, necessitating more aggressive management. Early recognition and appropriate coding of ICANS are crucial for ensuring proper treatment and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of immunotherapy-related complications
  • Differentiation from other neurological disorders
  • Monitoring of symptom progression is essential
  • Documentation must specify grade of neurotoxicity

Audit Risk Factors

  • Inadequate documentation of symptom severity
  • Failure to specify the grade of neurotoxicity
  • Misclassification of ICANS with other neurological conditions
  • Lack of follow-up documentation on symptom resolution

Specialty Focus

Medical Specialties

Oncology

Documentation Requirements

Detailed records of immunotherapy treatment, patient symptoms, and neurological assessments.

Common Clinical Scenarios

Patients receiving CAR T-cell therapy presenting with neurological symptoms.

Billing Considerations

Close monitoring for symptom progression and timely documentation of any changes in neurological status.

Neurology

Documentation Requirements

Comprehensive neurological evaluations and assessments of cognitive function.

Common Clinical Scenarios

Patients with ICANS presenting with confusion or mild motor deficits.

Billing Considerations

Differentiating ICANS from other neurological disorders such as encephalitis or stroke.

Coding Guidelines

Inclusion Criteria

Use G92.01 When
  • 10 coding guidelines specify that G92
  • 01 should be used when the patient exhibits grade 1 neurotoxicity symptoms following immune effector cell therapy
  • Documentation must clearly indicate the symptoms and their severity

Exclusion Criteria

Do NOT use G92.01 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

96413CPT Code

Chemotherapy administration, intravenous, push technique

Clinical Scenario

Used when administering CAR T-cell therapy, which may lead to ICANS.

Documentation Requirements

Document the administration details and any observed neurological symptoms.

Specialty Considerations

Oncology specialists should ensure thorough documentation of patient responses post-therapy.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like ICANS, improving the ability to track and manage complications associated with immunotherapy.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like ICANS, improving the ability to track and manage complications associated with immunotherapy.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like ICANS, improving the ability to track and manage complications associated with immunotherapy.

Resources

Clinical References

  • •
    American Society of Clinical Oncology (ASCO)

Coding & Billing References

  • •
    American Society of Clinical Oncology (ASCO)

Frequently Asked Questions

What symptoms are associated with grade 1 ICANS?

Grade 1 ICANS symptoms may include mild confusion, headache, fatigue, and transient sensory changes that do not significantly impair daily functioning.