ICD-10-CM > S00-T88 > T20-T25 > T25 > T25.5 > T25.52 > T25.529 T25.529 Corrosion of first degree of unspecified foot Non-Billable/Non-Specific Codes T25.529A..., initial encounterT25.529D..., subsequent encounterT25.529S..., sequela