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ICD-10 Guide
ICD-10 CodesI63.522

I63.522

Billable

Cerebral infarction due to unspecified occlusion or stenosis of left anterior cerebral artery

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

Code Description

ICD-10 I63.522 is a billable code used to indicate a diagnosis of cerebral infarction due to unspecified occlusion or stenosis of left anterior cerebral artery.

Key Diagnostic Point:

Cerebral infarction due to unspecified occlusion or stenosis of the left anterior cerebral artery is a condition characterized by the interruption of blood flow to the left anterior cerebral artery, leading to ischemic damage in the corresponding cerebral territory. Clinically, patients may present with unilateral weakness, sensory deficits, 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 its occlusion particularly impactful on motor and sensory functions. Disease progression can vary; some patients may experience transient ischemic attacks (TIAs) before a full-blown stroke, while others may have a sudden onset of symptoms. Diagnostic considerations include neuroimaging techniques such as CT or MRI to confirm the presence of infarction and to rule out hemorrhagic stroke. Additionally, vascular imaging may be performed to assess for stenosis or occlusion in the affected artery. Early recognition and management are crucial to minimize neurological deficits and improve patient outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity
  • Treatment complexity
  • Documentation requirements
  • Coding specificity

Audit Risk Factors

  • Common coding errors
  • Documentation gaps
  • Billing challenges

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

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The clinical significance of I63.522 lies in its association with significant morbidity and mortality rates in affected populations. Understanding the epidemiology of cerebral infarctions can guide preventive measures and healthcare resource allocation. Quality measures may focus on timely diagnosis and intervention, which are critical for improving patient outcomes and reducing long-term disability. Population health initiatives targeting risk factors such as hypertension and diabetes can help mitigate the incidence of strokes related to this condition.

ICD-9 vs ICD-10

The clinical significance of I63.522 lies in its association with significant morbidity and mortality rates in affected populations. Understanding the epidemiology of cerebral infarctions can guide preventive measures and healthcare resource allocation. Quality measures may focus on timely diagnosis and intervention, which are critical for improving patient outcomes and reducing long-term disability. Population health initiatives targeting risk factors such as hypertension and diabetes can help mitigate the incidence of strokes related to this condition.

Reimbursement & Billing Impact

Reimbursement considerations include the necessity of demonstrating medical necessity for imaging and interventions. Common denials may arise from insufficient documentation or failure to specify the nature of the occlusion. Best practices include ensuring that all clinical notes are detailed and that the coding reflects the complexity of the patient's condition accurately.

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 I63.522?

I63.522 covers cerebral infarction resulting from unspecified occlusion or stenosis of the left anterior cerebral artery. This includes ischemic strokes where the exact cause of occlusion is not identified, such as embolism or thrombosis.

When should I63.522 be used instead of related codes?

I63.522 should be used when the occlusion or stenosis of the left anterior cerebral artery is documented but not specified as embolic or thrombotic. If the cause is known, more specific codes should be utilized.

What documentation supports I63.522?

Documentation should include clinical findings, imaging results confirming cerebral infarction, and any relevant history of vascular disease. Clear notes on the nature of the occlusion or stenosis, even if unspecified, are essential.