ICD-10-CM > S00-T88 > T33-T34 > T33 > T33.5 > T33.51 > T33.519 T33.519 Superficial frostbite of unspecified wrist Non-Billable/Non-Specific Codes T33.519A..., initial encounterT33.519D..., subsequent encounterT33.519S..., sequela