ICD-10-CM > S00-T88 > T20-T25 > T22 > T22.7 > T22.71 T22.71 Corrosion of third degree of forearm Non-Billable/Non-Specific Codes T22.711Corrosion of third degree of right forearmT22.711A..., initial encounterT22.711D..., subsequent encounterT22.711S..., sequelaT22.712Corrosion of third degree of left forearmT22.712A..., initial encounterT22.712D..., subsequent encounterT22.712S..., sequelaT22.719Corrosion of third degree of unspecified forearmT22.719A..., initial encounterT22.719D..., subsequent encounterT22.719S..., sequela