ICD-10-CM > S00-T88 > T33-T34 > T34 > T34.5 > T34.51 > T34.519 T34.519 Frostbite with tissue necrosis of unspecified wrist Non-Billable/Non-Specific Codes T34.519A..., initial encounterT34.519D..., subsequent encounterT34.519S..., sequela