ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.5 > T23.56 > T23.562 T23.562 Corrosion of first degree of back of left hand Non-Billable/Non-Specific Codes T23.562A..., initial encounterT23.562D..., subsequent encounterT23.562S..., sequela