ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.6 > T23.65 > T23.659 T23.659 Corrosion of second degree of unspecified palm Non-Billable/Non-Specific Codes T23.659A..., initial encounterT23.659D..., subsequent encounterT23.659S..., sequela