ICD-10-CM > S00-T88 > T20-T25 > T22 > T22.5 > T22.53 > T22.532 T22.532 Corrosion of first degree of left upper arm Non-Billable/Non-Specific Codes T22.532A..., initial encounterT22.532D..., subsequent encounterT22.532S..., sequela