ICD-10-CM > S00-T88 > T20-T25 > T22 > T22.5 > T22.51 > T22.511 T22.511 Corrosion of first degree of right forearm Non-Billable/Non-Specific Codes T22.511A..., initial encounterT22.511D..., subsequent encounterT22.511S..., sequela