LV Thrombosis - What is the ICD-9

brain or heart?

Without seeing the rest of the documentation I'm not sure if you're looking at the ventricle of the heart or of the brain.

So, basically, start in your ICD-9 index under Thrombosis, and then look at the indents under brain or under heart, depending on the specifics of your case.

F Tessa Bartels, CPC, CPC-E/M