ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.6 > T23.69 > T23.699 T23.699 Corrosion of second degree of multiple sites of unspecified wrist and hand Non-Billable/Non-Specific Codes T23.699A..., initial encounterT23.699D..., subsequent encounterT23.699S..., sequela