Q. Can you please advise on the proper use of this GT modifier? We use another code in the first block. Does this take that place or does it go in the second block?

A. When billing for a service with a GT modifier, the GT modifier should be listed after any other modifiers. For example, if you bill with a HO modifier and a GT modifier, HO should be included in the first block and GT should be included in the second block.

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