ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.7 > T24.73 T24.73 Corrosion of third degree of lower leg Non-Billable/Non-Specific Codes T24.731Corrosion of third degree of right lower legT24.731A..., initial encounterT24.731D..., subsequent encounterT24.731S..., sequelaT24.732Corrosion of third degree of left lower legT24.732A..., initial encounterT24.732D..., subsequent encounterT24.732S..., sequelaT24.739Corrosion of third degree of unspecified lower legT24.739A..., initial encounterT24.739D..., subsequent encounterT24.739S..., sequela