ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.6 > T23.69 > T23.691 T23.691 Corrosion of second degree of multiple sites of right wrist and hand Non-Billable/Non-Specific Codes T23.691A..., initial encounterT23.691D..., subsequent encounterT23.691S..., sequela