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Home/Diagnosis/ICD-10 Coding for Acute Left ICA Stroke Syndrome

ICD-10 Coding for Acute Left ICA Stroke Syndrome

I63.311
I63.411

Complete ICD-10-CM coding and documentation guide for icd-10 coding for acute left ica stroke syndrome includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Left Internal Carotid Artery Stroke
Left ICA Occlusion Stroke
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Key Information: ICD-10 Coding for Acute Left ICA Stroke Syndrome

Essential facts and insights about ICD-10 Coding for Acute Left ICA Stroke Syndrome

Use ICD-10 code I63.311 for cerebral infarction due to thrombosis of left internal carotid artery, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Cerebral infarction due to thrombosis of left internal carotid artery

Billable Code
I63.311
Billable

Diagnostic Criteria

clinical:
  • • Confirmed thrombosis of left ICA on imaging
documentation:
  • • Detailed documentation of stroke symptoms and imaging findings

Applicable To

  • • Thrombosis of left ICA with infarction

Important Notes

  • • Ensure imaging confirms the specific cause (thrombosis vs embolism) before coding.

Cerebral infarction due to embolism of left internal carotid artery

Billable Code
I63.411
Billable

Diagnostic Criteria

clinical:
  • • Imaging (CTA/MRA) confirming left ICA embolism
  • • Clinical presentation of ischemic stroke in left MCA territory

Applicable To

  • • Embolism of left ICA with infarction

Important Notes

  • • Ensure imaging confirms the specific cause (embolism vs thrombosis) before coding.
Ancillary Codes

Additional codes that may be used with this diagnosis

I69.351

Hemiplegia/hemiparesis following cerebral infarction affecting right dominant side

Use post-discharge if residual deficits are present.

Frequently Asked Questions

What is the ICD-10 code for acute left ICA stroke syndrome?

The ICD-10 code for acute left ICA stroke syndrome due to thrombosis is I63.311, and due to embolism is I63.411.

How do you code a stroke due to left ICA occlusion?

Code I63.311 for thrombosis and I63.411 for embolism, confirmed by imaging, with additional codes for underlying conditions.

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