ICD-10-CM > S00-T88 > T20-T25 > T22 > T22.6 > T22.61 > T22.612 T22.612 Corrosion of second degree of left forearm Non-Billable/Non-Specific Codes T22.612A..., initial encounterT22.612D..., subsequent encounterT22.612S..., sequela