Jan 1, 2017 This column points out the CPT changes made for the foot and toes exostectomy (eg, Silver-type procedure); 28293—Correction, hallux .Oct 1, 2009 Can anyone help me with finding a code? The doctor used a high speed rotating burr to perform an exostectomy of condyle spurs on the third .Query: 1st Met-Cuneiform Exostectomy Coding From: Charles The proper CPT code for removal of the dorsal exostectomy code would be billed.HALLUX SUBUNGUAL EXOSTECTOMY. Surgical Technique. James H. Morgafr, Ir., DPM. Subr-rngual exostoses, an overgrowth of bone on the dorsal aspect.