Percentage of patients aged 18 years or older with a non healing lower extremity wounds or ulcers that underwent a non-invasive arterial assessment once in a 12 month period, stratified by severity of arterial disease (as measured via ABI, perfusion pressure, or transcutaneous oximetry) . There are four rates reported for this measure. The four rates will be risk stratified into three buckets which are the following: 1. No evidence of arterial disease and ischemia is not a contributor to non-healing 2. Possible arterial compromise (possible reduced flow), but the patient may still be able to heal the wound(s) or ulcer(s) and does not require referral to a vascular specialist. 3. Evidence of arterial disease- patient should be referred to specialist for vascular assessment if not currently in the care of a vascular expert. Ischemia may be the reason the patient has failed to heal. 4. The average of the three risk stratified buckets which will be the performance rate in the JSON XML submitted.