Occlusion and stenosis of left posterior cerebral artery
ICD-10 I66.22 is a billable code used to indicate a diagnosis of occlusion and stenosis of left posterior cerebral artery.
I66.22 refers to the occlusion and stenosis of the left posterior cerebral artery (PCA), a critical vessel in the cerebral circulation that supplies blood to the occipital lobe and parts of the temporal lobe. Clinically, patients may present with symptoms such as visual disturbances, hemianopsia, or cognitive deficits, depending on the extent of ischemia. The PCA is responsible for supplying blood to areas of the brain involved in visual processing, thus occlusion can lead to significant neurological deficits. Disease progression may involve gradual stenosis due to atherosclerosis or acute occlusion from embolic events. Diagnostic considerations include imaging studies such as MRI or CT angiography to visualize the blood flow and identify the location and severity of the occlusion. Early diagnosis and intervention 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
I66.22 specifically covers occlusion and stenosis of the left posterior cerebral artery, which may result from atherosclerosis, embolism, or other vascular diseases leading to reduced blood flow to the posterior cerebral territory.
I66.22 should be used when there is confirmed occlusion or stenosis of the left PCA, as evidenced by imaging studies. It is important to differentiate from other codes that may pertain to right-sided occlusions or other vascular territories.
Documentation should include clinical findings, imaging results (such as MRI or CT angiography), and any relevant history of cerebrovascular disease. Detailed notes on symptoms and neurological assessments are also essential.
