Wiki Measuring defect on new hernia codes

[hsmith67]

I understand the guidelines on the new hernia codes are to measure the defect prior to surgery, prior to incision. However, can anyone offer guidance if the surgeon identifies the size of the defect after inserting the trocars/camera and defining the defect size from "inside" the patient vs. defect as measured on top layer of skin prior to surgery? Thanks,
Hunter Smith, CPC