Occlusion and stenosis of right posterior cerebral artery
ICD-10 I66.21 is a billable code used to indicate a diagnosis of occlusion and stenosis of right posterior cerebral artery.
I66.21 refers to the occlusion and stenosis of the right posterior cerebral artery (PCA), a critical vessel in the brain's circulatory system. The PCA supplies blood to the occipital lobe, inferior part of the temporal lobe, and various deep structures of the brain. Clinical presentation may include visual disturbances, such as homonymous hemianopia, and cognitive deficits due to ischemia in the affected areas. The disease progression can lead to significant neurological deficits if not addressed promptly. Diagnosis typically involves imaging studies, such as MRI or CT angiography, to visualize the occlusion or narrowing of the artery. Risk factors include atherosclerosis, hypertension, diabetes, and other cardiovascular diseases. Understanding the anatomy involved and the potential for collateral circulation is crucial for effective management and treatment planning.
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
I66.21 covers conditions related to occlusion and stenosis of the right posterior cerebral artery, including ischemic strokes and transient ischemic attacks (TIAs) affecting the PCA territory.
I66.21 should be used when there is confirmed occlusion or stenosis specifically of the right PCA, differentiating it from other cerebral artery codes based on the location and nature of the vascular issue.
Documentation should include imaging studies that confirm the occlusion or stenosis, clinical notes detailing symptoms, and any relevant history of cardiovascular disease or risk factors.
