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3. Chapter - I00-I99
4. Section - I60-I69
5. Category - I66
6. I66.03

I66.03 - Occlusion and stenosis of bilateral middle cerebral arteries

• Applicable to Occlusion and stenosis of bilateral middle cerebral arteries
• The 2025 edition of ICD10-CM I66.03 became effective on October 1, 2024.
• This is the American ICD10-CM version of I66.03 - other international versions of ICD10 I66.03 may differ.
• I66.03 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

The following codes above I66.03 contain annotation back-references that may be applicable to I66.03:

• Chapter: I00-I99 - Diseases of the circulatory system
• Section: I60-I69 - Cerebrovascular diseases
• Category: I66 - Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.