ICD-10-CM > S00-T88 > T20-T25 > T22 > T22.6 > T22.64 > T22.642 T22.642 Corrosion of second degree of left axilla Non-Billable/Non-Specific Codes T22.642A..., initial encounterT22.642D..., subsequent encounterT22.642S..., sequela