C5278 HCPCS - APPLICATION OF LOW COST SKIN SUBSTITUTE GRAFT TO FACE, SCALP, EYELIDS, MOUTH, NECK, EARS, ORBITS, GENITALIA, HANDS, FEET, AND/OR MULTIPLE DIGITS, TOTAL WOUND SURFACE AREA GREATER THAN OR EQUAL TO 100 SQ CM; EACH ADDITIONAL 100 SQ CM WOUND SURFACE AREA, OR PART THEREOF, OR EACH ADDITIONAL 1% OF BODY AREA OF INFANTS AND CHILDREN, OR PART THEREOF (LIST SEPARATELY IN ADDITION TO CODE FOR PRIMARY PROCEDURE)