ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.4 > T23.45 > T23.459 T23.459 Corrosion of unspecified degree of unspecified palm Non-Billable/Non-Specific Codes T23.459A..., initial encounterT23.459D..., subsequent encounterT23.459S..., sequela