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ICD-10 Guide
ICD-10 CodesI63.421

I63.421

Billable

Cerebral infarction due to embolism of right anterior cerebral artery

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

Code Description

ICD-10 I63.421 is a billable code used to indicate a diagnosis of cerebral infarction due to embolism of right anterior cerebral artery.

Key Diagnostic Point:

Cerebral infarction due to embolism of the right anterior cerebral artery occurs when a blood clot or other debris travels through the bloodstream and lodges in the right anterior cerebral artery, leading to a reduction or cessation of blood flow to the brain tissue supplied by this artery. Clinically, patients may present with symptoms such as unilateral weakness, sensory loss, and cognitive impairments, particularly affecting the contralateral side of the body. The anterior cerebral artery supplies blood to the medial portions of the frontal lobes and the superior medial parietal lobes, making the clinical manifestations dependent on the specific areas affected. Disease progression can lead to significant neurological deficits, and timely intervention is crucial to minimize brain damage. Diagnostic considerations include neuroimaging studies such as CT or MRI to confirm the presence of an infarct and to rule out other potential causes of the symptoms. Risk factors for embolism include atrial fibrillation, recent myocardial infarction, and other cardiovascular conditions that predispose patients to thromboembolic events.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires imaging and clinical correlation to confirm the diagnosis.
  • Treatment complexity: May involve anticoagulation therapy, rehabilitation, and management of underlying cardiovascular conditions.
  • Documentation requirements: Detailed clinical notes and imaging results are necessary to support the diagnosis.
  • Coding specificity: Requires precise coding to differentiate from other types of cerebral infarctions.

Audit Risk Factors

  • Common coding errors: Misidentifying the type of cerebral infarction or failing to specify the artery involved.
  • Documentation gaps: Incomplete clinical notes or lack of imaging results to support the diagnosis.
  • Billing challenges: Potential denials due to insufficient documentation or incorrect coding.

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

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Cerebral infarctions significantly impact population health, contributing to morbidity and mortality associated with stroke. Understanding the epidemiology of embolic strokes, particularly those affecting the anterior cerebral artery, aids in developing targeted prevention strategies and improving healthcare utilization patterns. Quality measures related to timely intervention and rehabilitation can enhance patient outcomes and reduce long-term disabilities.

ICD-9 vs ICD-10

Cerebral infarctions significantly impact population health, contributing to morbidity and mortality associated with stroke. Understanding the epidemiology of embolic strokes, particularly those affecting the anterior cerebral artery, aids in developing targeted prevention strategies and improving healthcare utilization patterns. Quality measures related to timely intervention and rehabilitation can enhance patient outcomes and reduce long-term disabilities.

Reimbursement & Billing Impact

Reimbursement considerations may vary based on the severity of the condition and the treatment provided. Common denials may arise from insufficient documentation or incorrect coding, so it is crucial to adhere to coding best practices and ensure that all necessary information is included in the medical record to support the claim.

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 I63.421?

I63.421 specifically covers cerebral infarction due to embolism of the right anterior cerebral artery, which can result from various conditions such as atrial fibrillation, carotid artery disease, or other sources of emboli.

When should I63.421 be used instead of related codes?

I63.421 should be used when the cerebral infarction is specifically due to embolism of the right anterior cerebral artery, as opposed to other types of infarctions or embolisms affecting different arteries.

What documentation supports I63.421?

Documentation should include clinical findings, imaging results confirming the location and type of infarction, and a clear history of any embolic sources or risk factors.