ICD-10-CM > S00-T88 > T20-T25 > T22 > T22.5 > T22.53 T22.53 Corrosion of first degree of upper arm Non-Billable/Non-Specific Codes T22.531Corrosion of first degree of right upper armT22.531A..., initial encounterT22.531D..., subsequent encounterT22.531S..., sequelaT22.532Corrosion of first degree of left upper armT22.532A..., initial encounterT22.532D..., subsequent encounterT22.532S..., sequelaT22.539Corrosion of first degree of unspecified upper armT22.539A..., initial encounterT22.539D..., subsequent encounterT22.539S..., sequela