What is the diagnosis code for open venous stasis ulcers?

ICD-9: Per icd-9, the diagnostic code is 454.0.

there are several: In icd9 coding book. If you look up ulcer, stasis, then it leads you to with varicose vein 454.0, without varicose vein 459.81 or inflamed or infected 454.2 the 454.0 specifically states varicose vein with ulcer.

Coding: Not sure why codes are important to you. There are a group of codes that describe venous hypertension, with and without inflammation, and with and without ulceration. There are another set of codes that describe ulcerations and these vary depending on the location along the lower extremity that they are found.