Don't need (LT) modifier at all, as this code is not identified with a particular body part that can be inherently bilateral.
I would use (76) repeat procedure modifier on the second I&D. I know .. it's not on the same abscess site. Makes no difference. If you are using the exact same code and it's within the global period of the original code, you can still use the (76) modifier. This lets the carrier know that you are not duplicate billing.
Hope that helps.
F Tessa Bartels, CPC, CEMC
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