ICD-10-CM > S00-T88 > T20-T25 > T22 > T22.6 > T22.61 T22.61 Corrosion of second degree of forearm Non-Billable/Non-Specific Codes T22.611Corrosion of second degree of right forearmT22.611A..., initial encounterT22.611D..., subsequent encounterT22.611S..., sequelaT22.612Corrosion of second degree of left forearmT22.612A..., initial encounterT22.612D..., subsequent encounterT22.612S..., sequelaT22.619Corrosion of second degree of unspecified forearmT22.619A..., initial encounterT22.619D..., subsequent encounterT22.619S..., sequela