ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.7 > T24.79 > T24.791 T24.791 Corrosion of third degree of multiple sites of right lower limb, except ankle and foot Non-Billable/Non-Specific Codes T24.791A..., initial encounterT24.791D..., subsequent encounterT24.791S..., sequela