ICD-10-CM > S00-T88 > T20-T25 > T25 > T25.5 > T25.52 T25.52 Corrosion of first degree of foot Non-Billable/Non-Specific Type 2 Excludes corrosion of first degree of toe(s) (nail) (T25.53-) Codes T25.521Corrosion of first degree of right footT25.521A..., initial encounterT25.521D..., subsequent encounterT25.521S..., sequelaT25.522Corrosion of first degree of left footT25.522A..., initial encounterT25.522D..., subsequent encounterT25.522S..., sequelaT25.529Corrosion of first degree of unspecified footT25.529A..., initial encounterT25.529D..., subsequent encounterT25.529S..., sequela