Just a quick post to let you know about this on the web. It is a table from the Kansas Medical Assistance Program, but it provides good insight as to which modifiers can/cannot be used together. It is in a PDF format. I downloaded it and have it on my desktop for reference. I hope that you find it as helpful as I did.
https://www.kmap-state-ks.us/Documents/Content/Provider/Coding%20Modifiers%20Table.pdf
