ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.6 > T24.63 > T24.631 T24.631 Corrosion of second degree of right lower leg Non-Billable/Non-Specific Codes T24.631A..., initial encounterT24.631D..., subsequent encounterT24.631S..., sequela