I know that here in IL, to whatever level of success, we are trying to get away from abbreviations, even commonly used ones. It really doesnt take that much more to type "treatment" than it does "Tx" and in spelling things out we can make sure that at least that hasnt contributed to foul ups and mistakes down the line. I would hate to have to sit in court and be grilled by a lawyer as to whether I thought my string of abbreviations has added to any confusions. Ive seen chief complaint as CC, CO (complaining of) PCO (patient complains of) and C with a line over it. I know one medic who writes the clearest run and PCR reports I have ever seen. They are boring as sin to read but everything is there and could be understood by a lay person. And he has never been called for failure to document or confusion caused by the way he writes. I think some providers get caught up in the idea that abbreviations, 10-codes and symbols make them seem more professional and high speed.