ICD-10-CM > S00-T88 > T20-T25 > T25 > T25.7 > T25.72 T25.72 Corrosion of third degree of foot Non-Billable/Non-Specific Type 2 Excludes corrosion of third degree of toe(s) (nail) (T25.73-) Codes T25.721Corrosion of third degree of right footT25.721A..., initial encounterT25.721D..., subsequent encounterT25.721S..., sequelaT25.722Corrosion of third degree of left footT25.722A..., initial encounterT25.722D..., subsequent encounterT25.722S..., sequelaT25.729Corrosion of third degree of unspecified footT25.729A..., initial encounterT25.729D..., subsequent encounterT25.729S..., sequela