Question concerning the December 2007 of the Coding Edge. in the article, "Profit Potential: Home Health Plan Certification", it mentions towards the end of the article, that Item 23 of the 1500 form needs to include the provider number of the home health agency from which the patient is receiving the Medicare covered services from. Is this something new? Several of our offices that bill these codes have said that they have never included these numbers and were questioning as to why we would put that information on Line 23 (Prior Authorization Number). Can someone help me with this?