ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.5 > T24.53 T24.53 Corrosion of first degree of lower leg Non-Billable/Non-Specific Codes T24.531Corrosion of first degree of right lower legT24.531A..., initial encounterT24.531D..., subsequent encounterT24.531S..., sequelaT24.532Corrosion of first degree of left lower legT24.532A..., initial encounterT24.532D..., subsequent encounterT24.532S..., sequelaT24.539Corrosion of first degree of unspecified lower legT24.539A..., initial encounterT24.539D..., subsequent encounterT24.539S..., sequela