ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.5 > T23.59 > T23.591 T23.591 Corrosion of first degree of multiple sites of right wrist and hand Non-Billable/Non-Specific Codes T23.591A..., initial encounterT23.591D..., subsequent encounterT23.591S..., sequela