Wiki ICD-9 for Right subclavian artery stenosis - please help!

mgord

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pt had duplex scan of extracranial arteries, unilateral/limited study - RT subclavian artery. The findings state that mild plaque imaged from origin for approximately 4cm.
I looked up plaque
then arteriosclerosis

I feel like this is an extremity artery. Pre-cerebral arteries are arteries that go to the cerebrum I thought.

Would this be 440.29 for extremities specified site or pre-cerebral 433.80??
Thanks!!
 
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