ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.6 > T24.61 > T24.619 T24.619 Corrosion of second degree of unspecified thigh Non-Billable/Non-Specific Codes T24.619A..., initial encounterT24.619D..., subsequent encounterT24.619S..., sequela