ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.7 > T24.71 > T24.719 T24.719 Corrosion of third degree of unspecified thigh Non-Billable/Non-Specific Codes T24.719A..., initial encounterT24.719D..., subsequent encounterT24.719S..., sequela