I did not think it was okay to code a medical diagnosis from nursing documentation. I thought it had to be from the physician's notes or report. I am struggling with a coder who is coding diagnoses from nursing documentation and I am being graded by this coder to go onto my next step as a coder. I strongly believe I should not be learning to do this wrong, and especially doing it wrong just to pass onto my next step as a coder. Does anyone have professional documentation from a trusted source that I can reference to to support that it is not okay to code from nursing documentation and that it needs to be from physician documentation?