ICD-10-CM > S00-T88 > T20-T25 > T22 > T22.6 > T22.64 > T22.641 T22.641 Corrosion of second degree of right axilla Non-Billable/Non-Specific Codes T22.641A..., initial encounterT22.641D..., subsequent encounterT22.641S..., sequela