AND google is your friend. do some searches online, you would be amazed at what you can find. I took on my first mental health billing, and I had to learn ASAP. I spent countless hrs researching the Cap/mr/dd program for NC medicaid which is primarily what they bill. I had some knowledge of the program but specifically with dme, and home health. nc medicaid has a good billing guide online, so that helped me out a lot. it is now a specialty that i market. ironically most of the people i asked about did more psychiatry, and not community support which this falls under. as a medical biller, you have to be someone who can research because something new comes up all the time.