I would sit down with my supervisor and ask her advice. Say someting like:
"Mary keeps pointing out that I am not writing the right phrases in my patient documentation, can you help me get this right. I want to make sure I do it the best way possible?"
"Mary often asks me about the patient care and I need you to tell me what I may be doing incorrectly, I don't want to do something that will cost the company money?".
This way it is a "Can you show me the right way to do this" instead of "She's mean to me, make her stop" kind of way.
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My friend worked as a therapist in a clinic for several years. The billing clerk did some paperwork wrong, billed for incorrect services, got paid, etc...then it was caught by medicaid. They all lost their licenses to practice, they cannot work in ANY business that receives ANY government funding, not even a doc's office due to insurance. She was found to be innocent at the trial and can re-apply to get her license reinstated now that she is totally cleared but must, out of her own pocket, pay back every penny she received that was improperly billed. Until that money is paid back she cannot even work in a child care setting that gets subsidized payments from the state. She cannot find a job anywhere.
She even got fired from Walmart over this since the state has charge accounts with them.
They tell her as soon as she has paid back the thousands and thousands of dollars she owes them she can refile the bills with the right documentation and get paid the right amounts under the right codes.
SO, if you are incorrectly documenting, even the wrong word on occasion, it could come back to bite you in the butt and everyone else in the company too. It is the biggest deal in billing that can happen.