ICD-10-CM > S00-T88 > T20-T25 > T25 > T25.5 > T25.51 T25.51 Corrosion of first degree of ankle Non-Billable/Non-Specific Codes T25.511Corrosion of first degree of right ankleT25.511A..., initial encounterT25.511D..., subsequent encounterT25.511S..., sequelaT25.512Corrosion of first degree of left ankleT25.512A..., initial encounterT25.512D..., subsequent encounterT25.512S..., sequelaT25.519Corrosion of first degree of unspecified ankleT25.519A..., initial encounterT25.519D..., subsequent encounterT25.519S..., sequela