ICD-9-CM Vol. 1 Diagnostic Codes →
7. DISEASES OF THE CIRCULATORY SYSTEM (390-459) →
section notes
CEREBROVASCULAR DISEASE (430-438) →
section notes
433 Occlusion and stenosis of precerebral arteries →
section notes
433.9 Occlusion and stenosis of; unspecified precerebral artery →
section notes
433.90   Ocl art NOS wo infrct
433.91   Ocl art NOS w infrct
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