ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.6 > T24.63 T24.63 Corrosion of second degree of lower leg Non-Billable/Non-Specific Codes T24.631Corrosion of second degree of right lower legT24.631A..., initial encounterT24.631D..., subsequent encounterT24.631S..., sequelaT24.632Corrosion of second degree of left lower legT24.632A..., initial encounterT24.632D..., subsequent encounterT24.632S..., sequelaT24.639Corrosion of second degree of unspecified lower legT24.639A..., initial encounterT24.639D..., subsequent encounterT24.639S..., sequela