Hospital Charges

We billed for office based ultrasound guided cyst aspiration (76942) and cyst drainage (58800) that was performed on 8/18/14. That same evening, patient presented to the hospital for ovarian hyperstimulation (256.1) and other ascites (789.59). Patient was admitted (99222) that evening and was seen by our physician from 08/18/14 through 08/28/14 (99231 & 99238).

My question is, should I use modifier 24 on all hospital charges in order to avoid having charges denied due to global surgery services rendered in our office on 8/18/14? Thanks for your assistance.