Cerebral infrc due to thombos of bi post cerebral arteries

This code signifies a stroke resulting from a blood clot obstructing both posterior cerebral arteries. This type of infarction typically affects the occipital lobes, thalami, and midbrain, leading to visual field deficits, memory impairment, and other neurological symptoms.

Apply this code when documentation clearly indicates an ischemic stroke caused by thrombosis affecting both posterior cerebral arteries. Supporting documentation includes neuroimaging (e.g., MRI, CT scan) confirming infarction in the relevant territories and physician notes specifying the thrombotic etiology and bilateral involvement.

• Ensure the documentation explicitly states "thrombosis" as the cause, not embolism or unspecified occlusion.
• Verify bilateral involvement of the posterior cerebral arteries; unilateral involvement would require a different code.
• Sequence this code as the primary diagnosis when it is the reason for the encounter.