If multiple lesions are treated the most complex lesion is listed first and the others are listed using what modifier?

When multiple lesions are treated, the most complex lesion is listed first, and the other lesions are listed using Modifier 59 (Distinct Procedural Service).

Modifier 59 indicates that the procedures are distinct or independent from one another, often due to different anatomical sites or separate patient encounters. It helps to show that the additional lesions treated are not part of the initial procedure.