433 Occlusion and stenosis of precerebral arteries
The following fifth-digit subclassification is for use with category 433:
0 without mention of cerebral infarction
1 with cerebral infarction
Includes:
embolism of basilar, carotid, and vertebral arteries
narrowing of basilar, carotid, and vertebral arteries
obstruction of basilar, carotid, and vertebral arteries
thrombosis of basilar, carotid, and vertebral arteries
Use additional code, if applicable, to identify status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission
to current facility (V45.88)
Excludes:
insufficiency NOS of precerebral arteries (435.0-435.9)