ICD-10-CM > S00-T88 > T20-T25 > T20 > T20.6 > T20.61 > T20.611 T20.611 Corrosion of second degree of right ear [any part, except ear drum] Non-Billable/Non-Specific Codes T20.611A..., initial encounterT20.611D..., subsequent encounterT20.611S..., sequela