ICD-10-CM > S00-T88 > T20-T25 > T22 > T22.6 > T22.63 T22.63 Corrosion of second degree of upper arm Non-Billable/Non-Specific Codes T22.631Corrosion of second degree of right upper armT22.631A..., initial encounterT22.631D..., subsequent encounterT22.631S..., sequelaT22.632Corrosion of second degree of left upper armT22.632A..., initial encounterT22.632D..., subsequent encounterT22.632S..., sequelaT22.639Corrosion of second degree of unspecified upper armT22.639A..., initial encounterT22.639D..., subsequent encounterT22.639S..., sequela