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ICD-10 Guide
ICD-10 CodesI63.332

I63.332

Billable

Cerebral infarction due to thrombosis of left posterior cerebral artery

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

Code Description

ICD-10 I63.332 is a billable code used to indicate a diagnosis of cerebral infarction due to thrombosis of left posterior cerebral artery.

Key Diagnostic Point:

Cerebral infarction due to thrombosis of the left posterior cerebral artery is a type of ischemic stroke that occurs when a blood clot obstructs blood flow to the left posterior cerebral artery (PCA), which supplies blood to the occipital lobe and parts of the temporal lobe. Clinically, patients may present with visual disturbances, such as homonymous hemianopia, and cognitive deficits, including memory loss or difficulty with spatial awareness. The anatomy involved includes the left PCA, which branches from the basilar artery and is crucial for supplying oxygenated blood to the brain regions responsible for visual processing and higher cognitive functions. Disease progression can vary; some patients may experience rapid onset of symptoms, while others may have a more gradual presentation. Diagnostic considerations include neuroimaging techniques such as CT or MRI to confirm the presence of an infarct and to rule out hemorrhagic stroke. Early recognition and intervention are critical to minimize neurological damage and improve patient 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, rehabilitation, and management of risk factors.
  • Documentation requirements: Detailed clinical notes and imaging reports are necessary.
  • Coding specificity: Requires precise coding to differentiate from other types of strokes.

Audit Risk Factors

  • Common coding errors: Misidentification of the affected artery or type of stroke.
  • Documentation gaps: Incomplete clinical notes or lack of imaging results.
  • 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

Emergency Medicine

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

Cerebral infarctions, including those due to thrombosis of the left PCA, have significant clinical implications, affecting patient quality of life and increasing healthcare utilization. The prevalence of strokes contributes to a substantial burden on healthcare systems, necessitating effective management strategies. Understanding the epidemiology of stroke and its risk factors is essential for improving population health outcomes and implementing preventive measures.

ICD-9 vs ICD-10

Cerebral infarctions, including those due to thrombosis of the left PCA, have significant clinical implications, affecting patient quality of life and increasing healthcare utilization. The prevalence of strokes contributes to a substantial burden on healthcare systems, necessitating effective management strategies. Understanding the epidemiology of stroke and its risk factors is essential for improving population health outcomes and implementing preventive measures.

Reimbursement & Billing Impact

Reimbursement considerations include ensuring that the diagnosis is clearly linked to the services rendered. Common denials may arise from insufficient documentation or failure to meet medical necessity criteria. Best practices include maintaining thorough clinical notes, ensuring that imaging studies are properly documented, and confirming that all services billed are supported by the patient's clinical condition.

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 I63.332?

I63.332 specifically covers cerebral infarction resulting from thrombosis of the left posterior cerebral artery, which may lead to visual and cognitive impairments. It is crucial to differentiate this from other types of strokes and infarctions.

When should I63.332 be used instead of related codes?

I63.332 should be used when the infarction is specifically due to thrombosis of the left PCA, as opposed to other arteries or causes of stroke. Accurate diagnosis and imaging findings are essential for appropriate code selection.

What documentation supports I63.332?

Documentation should include clinical notes detailing the patient's symptoms, results from neuroimaging studies confirming the infarction, and any relevant medical history that supports the diagnosis of thrombosis of the left PCA.