ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.7 > T23.70 > T23.702 T23.702 Corrosion of third degree of left hand, unspecified site Non-Billable/Non-Specific Codes T23.702A..., initial encounterT23.702D..., subsequent encounterT23.702S..., sequela