Chopart Amputation Revision

Can anyone tell me how to code for a "revision" of a Chopart amputation?
The original claim was billed 2800-LT; The patient is coming back 30 days later and the doctor is removing more Talus and Calcaneus bone.
Thank you for your help.

re: Chopart Amputation Revision

A midtarsal amputation would be reported with 28800 where the amputation is performed through the talonavicular and calcaneocuboid joints. If you are using the same code to report a staged or related procedure by the same physician (not related to a problem) consider using Modifier 58.

58 - Staged or Related Procedure or Service by the Same Physician or Other Qualified Health Care Professional During the Postoperative Period

It may be necessary to indicate that the performance of a procedure or service during the postoperative period was (a) planned or anticipated (staged); (b) more extensive than the original procedure, or (c) for therapy following a surgical procedure. This circumstance may be reported by adding modifier 58 to the staged or related procedure.