Help! I73.9 plus an L97 code or I70.243 plus an L97 code?

Got a question here. Not sure how to code it.
Non healing chronic ulcer involving the medial and lateral aspect of the ankle, which has been present for at least 3 years status post vascular surgery, which was endovascular procedure . How should this be coded: I73.9 plus an L97 code or I70.243 plus an L97 code?
Thanks!
Mary
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