Am I a candidate for calf and ankle lipo? I have chronic venous insufficiency.

I would suggest not doing any liposuction in your ankles or calf areas if you have any signs of venous insufficiency, especially if you are over 40. Liposuction in these areas can stay swollen for several months even in young people with good veins.

Without pictures we can’t make an accurate assessment.
Liposuction of the calves and ankles is the most technically difficult area on the body to treat. It has the worst recovery and having venous insufficiency or venous hypertension is going to make all of these things worse.
My practice has been devoted exclusively to Liposuction and said transfer procedures for the last decade. I performed close to 8000 Liposuction procedures in my career.
Currently performing around 400 Liposuction cases per year.
I’ve done calf and ankle Liposuction six times and typically do one case of the year.
I generally steer people away from this treatment unless they are exceptionally good candidates which means they having a serious quality-of-life issue because of that distribution. Having venous insufficiency makes you worse candidate.
Expect recovery to take three times  longer than other forms of Liposuction with required leg elevations for many months and potentially difficulty fitting in certain shoes.
The contours around the ankle especially around the Achilles  tendon are challenging territory and an inexperienced or unskilled provider may leave these looking worse than before.
You may or may not be a candidate for Liposuction. Your post is insufficient to make any type of assessment.
I suggest having a few local in person consultations with experienced board-certified plastic surgeons. Considering everything you mentioned you should be selective on who you choose.
In your case I would highly recommend having multiple consultations.
If you’re not sure then stay conservative.
Best,
Mats Hagstrom MD