M1332: CMS OASIS Q&As

If areas of venous stasis ulceration are contiguous and developed at the same time, the entire area would be counted as one stasis ulcer. If the patient had a venous stasis ulcer and then later developed another venous stasis ulcer, and eventually the wound margins met, it would be counted as two ulcers, as long as it remains possible to differentiate one ulcer from another based on wound margins. Depending on the timing and progression, it may be difficult for the clinician to know that a current ulcer was once two ulcers, and/or where one ulcer ends and another begins for assessment/reporting purposes. It would be up to the assessing clinician to determine the number of stasis ulcers in situations where multiple ulcers may have merged together.