ICD-10-CM > S00-T88 > T20-T25 > T25 > T25.6 > T25.61 T25.61 Corrosion of second degree of ankle Non-Billable/Non-Specific Codes T25.611Corrosion of second degree of right ankleT25.611A..., initial encounterT25.611D..., subsequent encounterT25.611S..., sequelaT25.612Corrosion of second degree of left ankleT25.612A..., initial encounterT25.612D..., subsequent encounterT25.612S..., sequelaT25.619Corrosion of second degree of unspecified ankleT25.619A..., initial encounterT25.619D..., subsequent encounterT25.619S..., sequela