Biliary Anchor suture

I work at a family practice and we have a pt that came in and after review of pt complaints the physician found that the pt's biliary tube anchor suture was out (not the reason he came in for). Our physician decided to replace said anchor suture to help the pt. out. OH and this is a MC pt as well. I was wondering if I could bill for the replacement of the anchor suture as our physician was not the one to place the tube.

I am thinking that it would be within the 90 day global period as this pt was seen 60 days after the original procedure.

Please help...

Thanks

Biliary Anchor suture