Wiki INJECTION 64445

I grabbed the 2020 CPT book, and on page 437 of mine there is a table for when imaging is included or billed separately.

64445 shows billed separately. 77003 is for spinal fluoro guidance. Why do you think you need a TC modifier?
 
I was looking up another procedure ( SI joint injections) and it said to use w/TC modifier when billing for ASC. This is all new to me so I am not sure if it was correct.
Thank you for your response.
 
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