Occlusion and stenosis of bilateral middle cerebral arteries
ICD-10 I66.03 is a billable code used to indicate a diagnosis of occlusion and stenosis of bilateral middle cerebral arteries.
I66.03 refers to occlusion and stenosis of bilateral middle cerebral arteries, which are critical vessels supplying blood to significant portions of the brain. Clinically, patients may present with symptoms such as sudden weakness or numbness on one side of the body, difficulty speaking, or visual disturbances, indicative of potential ischemic stroke. The middle cerebral arteries (MCAs) are responsible for perfusing the lateral aspects of the cerebral hemispheres, and occlusion or stenosis can lead to severe neurological deficits. Disease progression may vary, with some patients experiencing transient ischemic attacks (TIAs) before a full stroke occurs. Diagnosis typically involves imaging studies such as MRI or CT angiography to visualize the occlusion or narrowing of the arteries. Risk factors include hypertension, diabetes, hyperlipidemia, and smoking, which contribute to atherosclerosis and vascular damage. Early identification and management are crucial to prevent irreversible brain damage and improve patient outcomes.
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
I66.03 encompasses occlusion and stenosis of both middle cerebral arteries, which may result from atherosclerosis, embolism, or other vascular diseases. It is critical for diagnosing conditions leading to ischemic strokes and TIAs.
I66.03 should be used when there is documented occlusion or stenosis affecting both middle cerebral arteries, as opposed to unilateral conditions which would use I66.01 or I66.02.
Documentation must include clinical findings, imaging results confirming bilateral occlusion or stenosis, and any relevant risk factors or comorbidities that contribute to the condition.
