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ICD-10 Guide
ICD-10 CodesI63.033

I63.033

Billable

Cerebral infarction due to thrombosis of bilateral carotid arteries

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 I63.033 is a billable code used to indicate a diagnosis of cerebral infarction due to thrombosis of bilateral carotid arteries.

Key Diagnostic Point:

Cerebral infarction due to thrombosis of bilateral carotid arteries is a serious condition characterized by the obstruction of blood flow to the brain resulting from a thrombus (blood clot) that forms in the carotid arteries. The carotid arteries, located on either side of the neck, supply blood to the brain, neck, and face. When thrombosis occurs bilaterally, it can lead to significant ischemia, resulting in a cerebral infarction, which manifests as a stroke. Clinical presentation may include sudden onset of neurological deficits such as weakness, speech difficulties, and loss of coordination. The progression of the disease can vary; some patients may experience transient ischemic attacks (TIAs) prior to a full-blown stroke, while others may present with acute symptoms. Diagnostic considerations include imaging studies such as CT or MRI to confirm the presence of infarction and Doppler ultrasound to assess blood flow in the carotid arteries. Timely diagnosis and intervention are crucial to minimize brain damage and improve outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires imaging and clinical evaluation to confirm diagnosis.
  • Treatment complexity: May involve anticoagulation therapy, surgical interventions, or rehabilitation.
  • Documentation requirements: Detailed clinical notes and imaging results are necessary.
  • Coding specificity: Requires precise coding to differentiate from other types of strokes.

Audit Risk Factors

  • Common coding errors: Misidentification of the affected arteries or type of stroke.
  • Documentation gaps: Incomplete clinical notes regarding symptoms and imaging results.
  • Billing challenges: Potential denials due to lack of supporting documentation for the diagnosis.

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Cardiology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related ICD-10 Codes

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CPT Code

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Documentation Requirements

CPT Code

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CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Cerebral infarction due to thrombosis of bilateral carotid arteries has significant clinical implications, as it can lead to long-term disability and increased healthcare utilization. The condition is a major contributor to stroke-related morbidity and mortality, impacting population health significantly. Quality measures focus on timely diagnosis and intervention, which are crucial for improving patient outcomes and reducing the burden on healthcare systems.

ICD-9 vs ICD-10

Cerebral infarction due to thrombosis of bilateral carotid arteries has significant clinical implications, as it can lead to long-term disability and increased healthcare utilization. The condition is a major contributor to stroke-related morbidity and mortality, impacting population health significantly. Quality measures focus on timely diagnosis and intervention, which are crucial for improving patient outcomes and reducing the burden on healthcare systems.

Reimbursement & Billing Impact

Reimbursement considerations may vary based on the severity of the condition and the interventions performed. Common denials may arise from insufficient documentation or failure to demonstrate medical necessity for the services rendered. It is essential to ensure that all relevant clinical information is included in the billing submission to support the diagnosis and treatment provided.

Resources

Clinical References

  • •
    ICD-10 Official Guidelines for I00-I99
  • •
    Clinical Documentation Requirements

Coding & Billing References

  • •
    ICD-10 Official Guidelines for I00-I99
  • •
    Clinical Documentation Requirements

Frequently Asked Questions

What specific conditions are covered by I63.033?

I63.033 specifically covers cerebral infarction resulting from thrombosis in both carotid arteries, leading to ischemic stroke. It does not include strokes caused by embolism or hemorrhage.

When should I63.033 be used instead of related codes?

I63.033 should be used when there is clear evidence of bilateral carotid artery thrombosis leading to cerebral infarction. If only one carotid artery is involved, the appropriate unilateral code should be selected.

What documentation supports I63.033?

Documentation should include clinical findings, imaging results confirming bilateral carotid artery thrombosis, and details of neurological deficits observed during the patient’s examination.