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