If your practice is in Northern California, please note that there are several changes to the acceptable diagnoses for services on or after October 1, 2017. Here is a link to the notice that Noridian posted recently.
https://med.noridianmedicare.com/web/jeb/article-detail/-/view/10525/chiropractic-services-lcd-r6
Do a search of all patients who have the deleted DX for services on or after 10/1/2017 and replace them with another diagnosis from the current active LCD.