ICD-10-CM > S00-T88 > T20-T25 > T25 > T25.7 > T25.79 > T25.792 T25.792 Corrosion of third degree of multiple sites of left ankle and foot Non-Billable/Non-Specific Codes T25.792A..., initial encounterT25.792D..., subsequent encounterT25.792S..., sequela