Cereb infrc d/t unsp occls or stenos of right post cereb art

This code signifies a stroke resulting from a blockage or narrowing of the right posterior cerebral artery, where the specific cause of the occlusion (e.g., thrombus, embolus) is not documented. This type of infarction can lead to visual field deficits, memory impairment, and other neurological symptoms depending on the affected brain regions.

Apply this code when documentation clearly indicates an ischemic stroke affecting the right posterior cerebral artery, and the physician has not specified the nature of the occlusion (e.g., thrombotic, embolic). This is appropriate when the medical record states "cerebral infarction due to unspecified occlusion of right PCA" or similar.

• Ensure the laterality (right) and the specific artery (posterior cerebral artery) are explicitly documented.
• Do not use this code if the cause of the occlusion (e.g., thrombosis, embolism) is specified; instead, select a more specific I63.x code.
• Always sequence this code after any underlying conditions that contributed to the stroke, such as atherosclerosis or atrial fibrillation, if documented.