Here is a pressure ulcer tool I created a while ago, and have now updated with OASIS and coding guidance.
My tool shows you OASIS and coding information broken down by stage (or if it is unstageable) of the pressure ulcer, whether it is closed, if there is a suspected DTI, or if the ulcer is with a skin graft or muscle flap.
The tools gives you OASIS guidance across M1306, M1307, M1308, M1310, M1312, M1314, M1320, M1322, M1324.
It also gives gives you the coding guidance for each situation.