I have never had to bill PIP cases, but I have billed WC cases, and if the patient presented for a WC complaint, and then had a new complaint unrelated to the WC, two separate claims and treatment notes were done. The WC was billed for the WC charges and dx's, and the patient's regular insurance was billed for the unrelated charges and dx's, with nothing being crossed over on the claims. The provider would dictate two separate treatment notes. I imagine it is the same process for PIP cases where the patient also has a new, unrelated issue at the same visit. But someone please correct me if I am wrong...