If your provider is the one that placed the sutures and the patient is still in the global period then the suture removal is not billable.
If your provider did NOT place the sutures then the removal of the sutures would be reported with the E/M code for that visit.
If the suture removal was done under anesthesia then you would report one of the following:
15850 Removal of sutures under anesthesia (other than local), same surgeon
15851 Removal of sutures under anesthesia (other than local), other surgeon
15852 Dressing change (for other than burns) under anesthesia (other than local)