Question 1

Is I66 a billable ICD-10 code?

Accepted Answer

No, I66 is not a billable code. It is a category code that requires additional specificity. You must select a more specific code from the subcategories for billing purposes.

Question 2

What does ICD-10 code I66 mean?

Accepted Answer

ICD-10-CM code I66 represents Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction. This code is part of the International Classification of Diseases, 10th Revision, Clinical Modification used for medical coding and billing in the United States.

Question 3

When was ICD-10 code I66 introduced?

Accepted Answer

Code I66 has been part of ICD-10-CM since 2016, when the coding system was mandated for use in the United States. This code was included in the original US implementation.

Question 4

What is the parent category for ICD-10 code I66?

Accepted Answer

The parent category for I66 is section:I60-I69 (Cerebrovascular diseases (I60-I69)). This hierarchical classification helps organize related diagnoses for more accurate coding.

Question 5

What conditions are excluded from I66?

Accepted Answer

Code I66 has Type 1 Excludes (mutually exclusive conditions) including: Occlusion and stenosis of cerebral artery causing cerebral infarction (I63.3-I63.5). These conditions cannot be coded together with I66 as they represent different diagnoses.

I662026

Excludes12Not coded together

Excludes210Not included here

Use Additional Code8Add code for detail

Includes4Included conditions

Is I66 a billable ICD-10 code?

What does ICD-10 code I66 mean?

When was ICD-10 code I66 introduced?

What is the parent category for ICD-10 code I66?

What conditions are excluded from I66?